Re: [Emc-users] Plasma Post processor

[Marius Liebenberg]

Your question is a bit cryptic. What software are you using to do the 
CAM with?


On 10/1/2019 5:50 PM, Bhushan Attarde via Emc-users wrote:

how can i implement post porcessor for plasma

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Marius D. Liebenberg
082 698 3251


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Re: [Emc-users] Mesa PIN file description

[Marius Liebenberg]

On 9/4/2019 9:09 PM, Peter C. Wallace wrote:

On Wed, 4 Sep 2019, Marius Liebenberg wrote:


Date: Wed, 4 Sep 2019 21:03:10 +0200
From: Marius Liebenberg 
Reply-To: "Enhanced Machine Controller (EMC)"
    
To: "Enhanced Machine Controller (EMC)" 


Subject: [Emc-users] Mesa PIN file description

Hi all

Does anyone know of a document or a description somewhere that 
explains the contents, structure and possibilities of the Mesa PIN file?


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Theres a bit of a description in the main constants file:

IDROMConst.vhd


Thanks Peter I have much clearer picture now. Just one description that 
is not clear is the "PinDescType". What I see in the array is not 
explained in the definition.


/type PinDescType is array(0 to MaxPins -1) of std_logic_vector(31 
downto 0);/


and what is in the array is:

/IOPortTag & x"00" & StepGenTag & StepGenDirPin,     -- I/O 00/

The second field in particular is not clear to me.



Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.



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[Emc-users] Mesa PIN file description

[Marius Liebenberg]

Hi all

Does anyone know of a document or a description somewhere that explains 
the contents, structure and possibilities of the Mesa PIN file?


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[Emc-users] Error compiling Mesa bit file for 7i76E

[Marius Liebenberg]

Hi All

With a lot of help from Peter Wallace I have managed to get my Xilinx 
installation working to compile own bit files.


I compiled successfully for the 5i25 but for the 7i76E I am getting 
errors that might be configuration related. This is the error (and there 
are more similar ones)


Using project "seveni76e" and "PIN_7I76x2D_34" that I found in the 
7i80.zip source file on the web.


HDLCompiler:69 - 
"C:\Users\mariu\Documents\Workshop\Electronics\Mesa\7i92\configs\hostmot2\source\hostmot2\TopEthernet16HostMot2.vhd" 
Line 353:  is not declared.



It would seem that most of the variables in this structure was not found:

Port (    CLK : in std_logic;
                LEDS : out std_logic_vector(LEDCount -1 downto 0);
                IOBITS : inout std_logic_vector(IOWidth -1 downto 
0);        -- external I/O bits
                LIOBITS: inout std_logic_vector (LIOWidth -1 downto 
0);    -- local I/O bits

                ED : inout std_logic_vector(15 downto 0);
                ECMD : out std_logic;
                NEREAD : out std_logic;
                NEWRITE : out std_logic;
                NECS : out std_logic;
                EINT : in std_logic;
                ECLK : out std_logic;
                NERST : out std_logic;
                SPICLK : out std_logic;
                SPIIN : in std_logic;
                SPIOUT : out std_logic;
                SPICS : out std_logic;
                NINIT : out std_logic;
                TP : out std_logic_vector(1 downto 0);
                OPTS : in std_logic_vector(1 downto 0)
         );
end TopEthernetHostMot2;

Any advice please?


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[Emc-users] Compiling mesa bit files

[Marius Liebenberg]

Hi All,

I am trying my hand at getting my own mesa pin files compiled. I am 
getting this error :


C:\xxx\5i25\configs\hostmot2\source\hostmot2\sserialwa.vhd" Line 282: 
Cannot find  in library 


I dont see a VHD file in the directory but there is a zip file with some 
source in that is named sslbp. I take it that I have to compile that 
somehow but I have no idea how. Any suggestions?


P.S. I am compiling the code for hm2pci project

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Re: [Emc-users] Pin files for 5i25

[Marius Liebenberg]

On 8/27/2019 1:36 PM, Marius Liebenberg wrote:

Hi all

I need to set a 5i25 up as a dual lpt port. I want to replace my 
mill installation with Path Pilot and I need the pin and bit 
files to do that.



Does anyone know where I can go look for the files please?



http://freeby.mesanet.com/software/parallel/5i25.zip



Thanks all. Peter to the rescue. Thanks Peter.
- 
Hopefully last question. There is a load  of files there and the 
names makes no logical sense to me. What file should I be looking at 
please?



Is there a way to build your own bit files?


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Re: [Emc-users] Pin files for 5i25

[Marius Liebenberg]

On 8/27/2019 8:48 PM, Marius Liebenberg wrote:





On 8/27/2019 1:36 PM, Marius Liebenberg wrote:

Hi all

I need to set a 5i25 up as a dual lpt port. I want to replace my 
mill installation with Path Pilot and I need the pin and bit files 
to do that.



Does anyone know where I can go look for the files please?



http://freeby.mesanet.com/software/parallel/5i25.zip



Thanks all. Peter to the rescue. Thanks Peter.
- 
Hopefully last question. There is a load  of files there and the names 
makes no logical sense to me. What file should I be looking at please?


Regards / Groete
Marius D. Liebenberg
082 698 3251



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Re: [Emc-users] Pin files for 5i25

[Marius Liebenberg]

On 8/27/2019 1:36 PM, Marius Liebenberg wrote:

Hi all

I need to set a 5i25 up as a dual lpt port. I want to replace my 
mill installation with Path Pilot and I need the pin and bit files 
to do that.



Does anyone know where I can go look for the files please?



http://freeby.mesanet.com/software/parallel/5i25.zip



Thanks all. Peter to the rescue. Thanks Peter.


Regards / Groete
Marius D. Liebenberg
082 698 3251



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Re: [Emc-users] Pin files for 5i25

[Marius Liebenberg]

On 8/27/2019 1:36 PM, Marius Liebenberg wrote:

Hi all

I need to set a 5i25 up as a dual lpt port. I want to replace my mill 
installation with Path Pilot and I need the pin and bit files to do that.



Does anyone know where I can go look for the files please?


--

Regards / Groete
Marius D. Liebenberg
082 698 3251



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[Emc-users] Pin files for 5i25

[Marius Liebenberg]

Hi all

I need to set a 5i25 up as a dual lpt port. I want to replace my mill 
installation with Path Pilot and I need the pin and bit files to do that.


--

Regards / Groete
Marius D. Liebenberg
082 698 3251


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Re: [Emc-users] mach3(winderz) vs LCNC bob useage diffs

[Marius Liebenberg]

Subject: Re: [Emc-users] mach3(winderz) vs LCNC bob useage diffs


On Wednesday 02 January 2019 08:58:27 Marius Liebenberg wrote:


 Gene
 You can configure Mach3 to drive anything on any output pin. It is up
 to the creator of the machine and the BOB that is used.
 You can dump the enable signals and hard wire them to be on all the
 time. The last thing you want is for the machine to have the steppers
 switched of and some axis moved.

 Mach3 can drive 6 axis from the parallel port same as LCNC. It's a
 port limitation.

 I have replaced the parport on some Mach machines with a 5i25 board
 with the right firmware used to simulate a parport. I cannot remember
 the name of the pin file but I will try and look for it.


That, Marius, I likely have in the 5i25 in that machine right now, so
don't go out of your way in that. I put the card in it a couple years
ago and had forgotten it. So its running on a real parport ATM.

I went back to bed after posting that since the missus wasn't awake 
yet,

and the first thing I'm going to do is go get the 4 axis box I've been
running the little hf mill with for years. The worst I might have to do
is rearrange the motor coils on the terminal block all the motor cables
hit on the side of that box. Its already set to pound sense into
somewhat bigger nema 23's so I'll only turn the currents down if they
get too hot. That will take care of everything but the spindle, and
there already pwm, dir and a separate enable coming off that bob that I
can wire up to the OEM box when I get tired of running it by hand. I 
see

this vfd can be set to run from a pwm, and is normally driven from the
relay db25-9 controls, but that bob has no relay. Its a late version of
a CNC4PC C1G, the one that has all the leds for trouble shooting.  I
love that bob, but its priced itself out of the market at $80 so its no
longer made. The next best one is the $18 SainSmart, the only opto's 
are

the inputs, and they are easily bypassed if you have a high resolution
encoder, which because mine for the G0704, is on the back of the motor,
has a scale of 7000+ in high gear. and over 14,000 in low gear.  And 
its

plumb amazing how tight the control is now. I can set it in high gear
where the top revs is 3000, to 35 revs, and I cannot stop the spindle 
by

hand!

However, it appears that this 120 volt vfd, although haveing a more
complex setup with 200 setup points acc the docs I found on it, is not
capable of reverse running! At least theres no reverse callout in the
mach pinout I have. We'll have to see, after makeing the 1st 4 axis's
run and scaled correctly, hopefully by the end of the day. The pitch of
the ball screws is UNK and the sizes vary.

I may have to transplant some code from the G0704's hal file that I 
used

to determine the spindle scale's there. One possibility anyway, as that
worked really well. Just comment it back out when done but left it that
way for possibly future use.

Probe the length of the ruler from a trysquare with a 1/8" tool, divide
that count by 97 (extra 1/8th for the tool dia), and * 96 and use that
for an axis scale.  That ought to give .001" per foot, provided the
ruler itself is accurate. A purely local std, if you've more than one,
probe them all and average the result. Quick and dirty, and likely as
accurate or better than a dial. And if counting steps, the answer is in
steps. Neat!

And that lack of a reverse is a bummer because I have for yonks, used a
low speed reverse when probing as it guarantees perfect probe
concentricity giving accuracy's well below .001" with any old contact 
in

the spindle. Doesn't, unless heavily oxidized alu the probe has to hit
hard enough to cut/punch thru, leave a mark on the work.  And thats an
ideal way to locate the work since its going to normally be mounted on
an insulating spoil board anyway on a machine like a 6040. Might have 
to

step up the probing voltage so it will punch a hole in the oxide better
when its only a micron away. The only provision for edge finding is 
that

you have to know the probes rad, completely unk when its a wobbly piece
of 10 ga copper sticking out of a teflon holder, so I don't edge find
with that on the g0704, but for locating a hole, it can't be beat. The
disadvantage of coarse is the tool change.

A bridge to be located, identified and crossed, when encountered.

Thank you Marius.  Once again, the conversation has shown me other
potential ways to skin this cat.  From that, I make progress.




It's a pleasure and good luck when you do get around to do it. Not so 
difficult after all.


 -- Original Message --
 From: "Gene Heskett" 
 To: emc-users@lists.sourceforge.net
 Sent: 2019-01-02 13:46:51
 Subject: [Emc-users] mach3(winderz) vs LCNC bob useage diffs

 >Greetings all, PCW in particular;
 >
 >Trying to sort a basket of rattlesnakes here. This computer has been
 >driving an HF micromill, thru the parport, using software stepping
 >since
 >

Re: [Emc-users] mach3(winderz) vs LCNC bob useage diffs

[Marius Liebenberg]

Gene
You can configure Mach3 to drive anything on any output pin. It is up to 
the creator of the machine and the BOB that is used.
You can dump the enable signals and hard wire them to be on all the 
time. The last thing you want is for the machine to have the steppers 
switched of and some axis moved.


Mach3 can drive 6 axis from the parallel port same as LCNC. It's a port 
limitation.


I have replaced the parport on some Mach machines with a 5i25 board with 
the right firmware used to simulate a parport. I cannot remember the 
name of the pin file but I will try and look for it.



-- Original Message --
From: "Gene Heskett" 
To: emc-users@lists.sourceforge.net
Sent: 2019-01-02 13:46:51
Subject: [Emc-users] mach3(winderz) vs LCNC bob useage diffs


Greetings all, PCW in particular;

Trying to sort a basket of rattlesnakes here. This computer has been
driving an HF micromill, thru the parport, using software stepping 
since

the early 2000's, thru a variety of actual motherboards.

It seems that mach3 at least, uses pins on a std parport that somewhat
resemble a game of 52 pickup. Scrambled would be the mixed audience
description.

Whereas all the stuff I've ever used, this being a linux only site, has
driven the x axis steppers from the db25 pins 2 and 3.

But  not mach3, where ack a doc I just found on cnczone:
pin1=XStep
Pin2=YEnable,
Pin3=YDir
Pin4=ZDir
Pin5=ZStep
Pin6=ZEnable
Pin7=XDir
pin8=YStep
pin9=spindle on/off relay on most bobs. Dir and speed apparently not
supported by mach3.  Shakes head in disbelief.
pin10=input1
pin11=input2
pin12=input3
pin13=input4
pin14=XEnable
pin15=not used in 3 axis setup, but I've a 4 axis machine.
pin16=expand output1
pin17=expand output2
pins18-25 grounded

Funny part, from the keyboard Y works both dirs, Z works both dirs
although I had to invert the scales in the .ini file. So I am not even
50% sure that is how THIS machine is wired.

PCW: Does the 5i25 have a firmware that can drive this mess?

Or am I doomed to rewire the electronics box that came with this beast 
to
make it into a std machine? In which case I'll just go get the box I 
was

driving the HF toy with, its already setup to drive 4 axis's. Thats
sounding like a better option all the time, but it needs more volts,
only 28 for the 2M542's in it. Needs 40+ volts to reach the speeds a
5i25 can drive it at. Uses the same  motor connector although I might
have to make pins match in the cabling. IIRC that will be a matter of
moving wires on the output terminal strip on that box. Since the 
2m542's

have been totally bulletproof, that might be the best idea. That leaves
the spindle control to deal with.

Its bob is different from any I've seen before.

Even if I expand p3 usage with a 7i76?

Thanks everybody.

Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 


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Re: [Emc-users] SPI

[Marius Liebenberg]

Andy, sofar I know the Master must pull the bus high with a pull-up 
resistor


-- Original Message --
From: "andy pugh" 
To: "Enhanced Machine Controller (EMC)" 


Sent: 2018-12-17 13:09:51
Subject: [Emc-users] SPI


Not as on-topic as I would like, but I suspect that some of you here
might know something useful.

I am trying to interface an ADS1256 board to an Arduino.
https://www.ebay.co.uk/itm/19242863594

Sometimes it almost works...
It will often sit there reading all-zeros then suddenly appear to
work, to an extent. But I don't seem to be able to configure it for
single-ended so suspect that the programming instructions are not
getting through.
The fact that the data output comes and goes makes me suspect that the
SPI comms is iffy.

The connection runs via the IO pins of an Arduino Nano,rather than
using the ICSP connector.

If I touch the ICSP connector on the Nano with my finger then the data
switches to 0xFF

So, I am wondering if the SPI bus needs to be terminated or something?

Also, the board has 100 Ohm resistors in series with all digital IO,
but the ADS1256 data sheet only shows 100R resisitors on the input
channels. Is this likely to be worth changing?

I have used other SPI devices with the Nano, and have not had these 
problems.
I have also tried with a full-size Arduino, with equally limited 
success.


Any tips for robustification of SPI comms?

--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] Details change on forum

[Marius Liebenberg]

Hi Jeff
Andy already fixed it so you probably removed the fixed text.

-- Original Message --
From: "Jeff Epler" 
To: "Marius Liebenberg" ; "Enhanced Machine 
Controller (EMC)" 

Sent: 2018-11-21 21:52:11
Subject: Re: [Emc-users] Details change on forum


I have been unable to determine why the signature setting is not
available for you to view or edit in your profile.

I have removed the signature text from your account on the forum.

Jeff

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Re: [Emc-users] Details change on forum

[Marius Liebenberg]

Done all that. I did read up on the forum software website that it is a 
setting that the administrator has to set in the CB module. Or something 
like that.

My info is outdated and I need to change it or delete it

-- Original Message --
From: "andy pugh" 
To: "Marius Liebenberg" ; "Enhanced Machine 
Controller (EMC)" 

Sent: 2018-11-21 12:06:40
Subject: Re: [Emc-users] Details change on forum



On Wed, 21 Nov 2018 at 08:44, Marius Liebenberg  wrote:

>  Does anyone know how to change profile details on the forum.

Click on (for example) "Recent Topics" and the top menu expands to 
include "profile"


Then there is a box top-right which says "Edit"

That takes you to another page that has a drop-down top-left where you 
can select "Update your profile"


But none of the options there appears to relate to a signature. I 
suspect the forum just doesn't do signatures any more.


--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is 
designed for the especial use of mechanical geniuses, daredevils and 
lunatics."

— George Fitch, Atlanta Constitution Newspaper, 1916

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[Emc-users] Details change on forum

[Marius Liebenberg]

Hi
Does anyone know how to change profile details on the forum. 
Specifically the signature. It used to be there but has since 
disappeared.



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Re: [Emc-users] UPS on controller

[Marius Liebenberg]

The machine stops when the emergency button is pushed. The power to  the 
motors are cut and the programs stops at a line. The operator records 
that line (or at least I do ) and then the job can be run from there or 
the closest line that is not in a canned cycle or and incremental 
command.

Remember this is crisis recovery and not the norm.

-- Original Message --
From: "Thaddeus Waldner" 
To: "Marius Liebenberg" ; "Enhanced Machine 
Controller (EMC)" 

Sent: 2018-11-20 18:50:26
Subject: Re: [Emc-users] UPS on controller

I’m intrigued by the “record the line number and then shut down” part. 
Is this something that the user would do manually after noticing that 
the power was cut or is this somehow automated?


 On Nov 20, 2018, at 10:10 AM, Marius Liebenberg 
 wrote:


 I agree with Andy. I put my controllers on a UPS and then have a 
signal that is wired through a drop-out relay that is also connected 
to the emergency stop switch. So when the power fails the machine is 
stopped and you can record line numbers at least and then shut down.


 -- Original Message --
 From: "andy pugh" 
 To: "Enhanced Machine Controller (EMC)" 


 Sent: 2018-11-20 17:14:59
 Subject: Re: [Emc-users] UPS on controller


 On Tue, 20 Nov 2018 at 15:10, Thaddeus Waldner  wrote:

  My question is, *should* a controller such as this have an 
uninterruptible power supply? If so, what parts of the machine are 
normally served by a UPS?


 I doubt that it is common to attempt to machine on standby power, 
but
 I can see good reasons to try to keep the controller alive to 
perform

 a controlled axis/spindle stop and graceful shutdown (including
 writing to the log files, tool-table etc)

 --
 atp
 "A motorcycle is a bicycle with a pandemonium attachment and is
 designed for the especial use of mechanical geniuses, daredevils and
 lunatics."
 — George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] UPS on controller

[Marius Liebenberg]

I agree with Andy. I put my controllers on a UPS and then have a signal 
that is wired through a drop-out relay that is also connected to the 
emergency stop switch. So when the power fails the machine is stopped 
and you can record line numbers at least and then shut down.


-- Original Message --
From: "andy pugh" 
To: "Enhanced Machine Controller (EMC)" 


Sent: 2018-11-20 17:14:59
Subject: Re: [Emc-users] UPS on controller


On Tue, 20 Nov 2018 at 15:10, Thaddeus Waldner  wrote:

  My question is, *should* a controller such as this have an 
uninterruptible power supply? If so, what parts of the machine are 
normally served by a UPS?


I doubt that it is common to attempt to machine on standby power, but
I can see good reasons to try to keep the controller alive to perform
a controlled axis/spindle stop and graceful shutdown (including
writing to the log files, tool-table etc)

--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] OT: motor usage

[Marius Liebenberg]

Either one toothed belt and two sets of (carefully chosen) pulleys or
two permanently-engaged toothed belts with a peg to engage the
high-speed ratio and an over-running clutch on the low-speed one:
That sounds interesting Andy. Please elaborate so my older mind can get 
the picture.




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064

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Re: [Emc-users] Linuxcnc vs Mach3 for Plasma Cutter?

[Marius Liebenberg]

The machine "works", as in they've made a half dozen ugly test cuts.  
But they have not figured out how to make the THC work right and some 
other finer points of perfection still need fixing.  Things like 
squaring the gantry are currently done by grabbing the bridge and 
pulling it forward against the end stops before turning on the drives.


Many shitty machines are squared like that. If Mach is not licensed the 
THC stuff is not functional at all.




Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: Dave Cole 
Sent: Tuesday, August 14, 2018 5:03 PM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Linuxcnc vs Mach3 for Plasma Cutter?

Mach3 is now pretty old.
Is there a legit license installed with the software?
Oftentimes machines were shipped with a demo license only. (limited 
Gcode support)


CandCNC used to sell a lot of Mach3 software with their systems.
Go look at their site now.

If it works... why change it?  Chances are that the torch height 
control won't work with LinuxCNC.


Dave

On 8/14/2018 4:11 PM, Todd Zuercher wrote:
 I don’t want to start a big Mach bashing.  I just want to hear some 
opinions from those who have set up a simple CNC plasma machine with 
both Mach and Linuxcnc.


 Are there any inherent advantages/disadvantages of one over the other 
for a plasma cutter?


 Here where I work they just purchased a cheap plasma table kit and
 they are setting it up with Mach3.  (they being not me.) My self, 
having zero experience with Mach3, probably would not have bothered 
trying to even install Mach.
 The machine is a simple stepper gantry using a Gecko 540 driver pack 
and I think there is some form of THC contraption as well, but I have 
no details.


 The two people setting it up know next to nothing about Mach3 or CNC, 
and even less about Linuxcnc (hence their choice to go with the Mach3 
setup.)  My guess is that they are just following the instructions 
that came with the kit.


 Unfortunately I am too busy at my end of the shop to offer them a 
whole lot of assistance, and since I know nothing about the plasma 
side of cnc...


 However I have threatened to come down to their end of the shop and
 install LinuxCNC on it while they are not looking

 Todd Zuercher
 P. Graham Dunn Inc.
 630 Henry Street
 Dalton, Ohio 44618
 Phone:  (330)828-2105ext. 2031

 
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Re: [Emc-users] Linuxcnc vs Mach3 for Plasma Cutter?

[Marius Liebenberg]

I have done many plasma machines over the years and I found that if the 
customer is not capable of his own software or has no understanding of 
LinuxCnc, then I just install Mach3.

Mach works very well for plasma.

Actually, a customer that is capable of fiddling the software is 
normally your worst nightmare and that is one big reason I install Mach 
and then remove the menus once done.



-- Original Message --
From: "Todd Zuercher" 
To: "Enhanced Machine Controller (EMC)" 


Sent: 2018-08-14 22:11:30
Subject: [Emc-users] Linuxcnc vs Mach3 for Plasma Cutter?

I don’t want to start a big Mach bashing.  I just want to hear some 
opinions from those who have set up a simple CNC plasma machine with 
both Mach and Linuxcnc.


Are there any inherent advantages/disadvantages of one over the other 
for a plasma cutter?


Here where I work they just purchased a cheap plasma table kit and they 
are setting it up with Mach3.  (they being not me.)
My self, having zero experience with Mach3, probably would not have 
bothered trying to even install Mach.
The machine is a simple stepper gantry using a Gecko 540 driver pack 
and I think there is some form of THC contraption as well, but I have 
no details.


The two people setting it up know next to nothing about Mach3 or CNC, 
and even less about Linuxcnc (hence their choice to go with the Mach3 
setup.)  My guess is that they are just following the instructions that 
came with the kit.


Unfortunately I am too busy at my end of the shop to offer them a whole 
lot of assistance, and since I know nothing about the plasma side of 
cnc...


However I have threatened to come down to their end of the shop and 
install LinuxCNC on it while they are not looking


Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

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Re: [Emc-users] One servo system

[Marius Liebenberg]

Chris
I would like to run Linuxcnc but headless so the PocketBeagle will be 
great for that. I dont really need the network connection as the system 
will run a couple of simple commands that can be activated from buttons. 
My brief required a simple operators interface so it's buttons only.


-- Original Message --
From: "Chris Albertson" <albertson.ch...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>

Sent: 2018-04-05 18:54:35
Subject: Re: [Emc-users] One servo system


The comment to use psocketbeagle and MK if Linux is required is good.
I just looked up psocketbeagle and I don't see any network interface.
 Likely if you want a Linux based controller it is so you can access
it remotely. You might get a USB/Wifi dongle to work but it would
be better to buy a board with built-in networking if networking is
important.   But the pocket beagle could always use a serial line for
networking if all you need is a text window and a few file transfers.

If you don't need Linix then it can be much simpler (An Arduino would
work) but remote access is a very nice feature to have.  Nice enough
that I'd go with a card that has built in wifi.

On Thu, Apr 5, 2018 at 6:32 AM, Marius Liebenberg
<mar...@mastercut.co.za> wrote:

 Hi Alexander
 I decided that this is the way to go. I did see that there is some 
talk that

 not all kernels are supported on the board.
 Is there a place where I can go look to see how to get this board 
setup with

 MachineKit please?

 -- Original Message --
 From: "Alexander Rössler" <alexander@roessler.systems>
 To: "Marius Liebenberg" <mar...@mastercut.co.za>
 Sent: 2018-04-04 13:37:56
 Subject: Re: [Emc-users] One servo system

 I think a simple real-time component should also do the trick in 
case
 the ladder logic component (it's also RT right?) does not work for 
your

 application.

 The PocketBeagle also has a PRU like the BeagleBone, so step 
generation

 or encoder feedback should be fine.

 --
 Alexander

 Marius Liebenberg writes:

  I just looked at the PocketBeagle and it seems to be a good choice 
for

  servo or stepper.
  It will have to be headless so I would imagine that I will be 
using

  ladder to control the system with.

  The track length is 6m, a button is pressed and I accelerate to 
8m/s and

  stop at the other end waiting for a command to do the same in the
  opposite direction. Machine must home in the one axis on demand as 
well.


  Would the ladder logic route be good enough or are there some 
other

  suggestions?


  -- Original Message --
  From: "Alexander Rössler" <alexander@roessler.systems>
  To: "Enhanced Machine Controller (EMC)"
  <emc-users@lists.sourceforge.net>
  Cc: "Marius Liebenberg" <mar...@mastercut.co.za>
  Sent: 2018-04-04 09:24:43
  Subject: Re: [Emc-users] One servo system


 Machinekit + PocketBeagle is good combo if you are looking for
 something
 running Linux.

 Chris Albertson writes:

   Of course.   Write a PID based control loop and put it an 
something
   like an Arduino.  I've done this a few times the control the 
wheels

 of
   a mobile robot.

   The details depend on the interfaces to botkhthe motoring the 
higher

   level control


   As for higher level control...  Is it a human using a joystick 
or

 some
   kind of automation that does the same thing repetivity  or must 
the
   device interact with the environment some how.  Perhaps opening 
a for

   as a person approaches.

   Then I have to ask what kind of hardware driver you have.   
Some

   drivers do most of the work for you.  These might take a
   step/direction pulse, r have an analog input.  But other 
drivers are
   just an H-Bridge and raw encoder signals.This is the kind 
of
   serves I use.   I end u using a small micro controler (Arduino 
or

   ARM-M) and relaying on a PID library.

   In ant case most of your effort will be spent in the interfaces 
not
   the actual PID control loop as that is just a few calls to a 
PID

   library

   On Wed, Mar 28, 2018 at 8:15 AM, Marius Liebenberg
   <mar...@mastercut.co.za> wrote:


   Hi all
   I have to put together a system that will use one servo to 
drive a

 small
   platform over a distance of 6m at a speed of about 25km/h or 
8m/s or

 there
   about.

   I feel that using a full computer and mesa card for just one 
axis

 that does
   not need a display sounds a bit excessive. The question is 
what are

 the
   other options if any.



   -
   Regards / Groete

   Marius D. Liebenberg
   +27 82 698 3251
   +27 12 743 6064


 
--
   Check out the vibrant tech community on one of the world's 
most

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Re: [Emc-users] One servo system

[Marius Liebenberg]

Hi Alexander
I decided that this is the way to go. I did see that there is some talk 
that not all kernels are supported on the board.
Is there a place where I can go look to see how to get this board setup 
with MachineKit please?


-- Original Message --
From: "Alexander Rössler" <alexander@roessler.systems>
To: "Marius Liebenberg" <mar...@mastercut.co.za>
Sent: 2018-04-04 13:37:56
Subject: Re: [Emc-users] One servo system


I think a simple real-time component should also do the trick in case
the ladder logic component (it's also RT right?) does not work for your
application.

The PocketBeagle also has a PRU like the BeagleBone, so step generation
or encoder feedback should be fine.

--
Alexander

Marius Liebenberg writes:

 I just looked at the PocketBeagle and it seems to be a good choice 
for

 servo or stepper.
 It will have to be headless so I would imagine that I will be using
 ladder to control the system with.

 The track length is 6m, a button is pressed and I accelerate to 8m/s 
and

 stop at the other end waiting for a command to do the same in the
 opposite direction. Machine must home in the one axis on demand as 
well.


 Would the ladder logic route be good enough or are there some other
 suggestions?


 -- Original Message --
 From: "Alexander Rössler" <alexander@roessler.systems>
 To: "Enhanced Machine Controller (EMC)"
 <emc-users@lists.sourceforge.net>
 Cc: "Marius Liebenberg" <mar...@mastercut.co.za>
 Sent: 2018-04-04 09:24:43
 Subject: Re: [Emc-users] One servo system


Machinekit + PocketBeagle is good combo if you are looking for
something
running Linux.

Chris Albertson writes:

  Of course.   Write a PID based control loop and put it an 
something
  like an Arduino.  I've done this a few times the control the 
wheels

of
  a mobile robot.

  The details depend on the interfaces to botkhthe motoring the 
higher

  level control


  As for higher level control...  Is it a human using a joystick or
some
  kind of automation that does the same thing repetivity  or must 
the
  device interact with the environment some how.  Perhaps opening a 
for

  as a person approaches.

  Then I have to ask what kind of hardware driver you have.   Some
  drivers do most of the work for you.  These might take a
  step/direction pulse, r have an analog input.  But other drivers 
are

  just an H-Bridge and raw encoder signals.This is the kind of
  serves I use.   I end u using a small micro controler (Arduino or
  ARM-M) and relaying on a PID library.

  In ant case most of your effort will be spent in the interfaces 
not

  the actual PID control loop as that is just a few calls to a PID
  library

  On Wed, Mar 28, 2018 at 8:15 AM, Marius Liebenberg
  <mar...@mastercut.co.za> wrote:

  Hi all
  I have to put together a system that will use one servo to drive 
a

small
  platform over a distance of 6m at a speed of about 25km/h or 8m/s 
or

there
  about.

  I feel that using a full computer and mesa card for just one axis
that does
  not need a display sounds a bit excessive. The question is what 
are

the
  other options if any.



  -
  Regards / Groete

  Marius D. Liebenberg
  +27 82 698 3251
  +27 12 743 6064

--
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  engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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--
Alexander Rössler
HMI Expert at Rössler Systems
Tel: +43 680 1348338
Web: https://roessler.systems
Blog: https://machinekoder.com
alexander@roessler.systems
Lebnergasse 1/7/7
1210 Wien - Austria
ATU72251528



--
Alexander Rössler
HMI Expert at Rössler Systems
Tel: +43 680 1348338
Web: https://roessler.systems
Blog: https://machinekoder.com
alexander@roessler.systems
Lebnergasse 1/7/7
1210 Wien - Austria
ATU72251528

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Re: [Emc-users] One servo system

[Marius Liebenberg]

I just looked at the PocketBeagle and it seems to be a good choice for 
servo or stepper.
It will have to be headless so I would imagine that I will be using 
ladder to control the system with.


The track length is 6m, a button is pressed and I accelerate to 8m/s and 
stop at the other end waiting for a command to do the same in the 
opposite direction. Machine must home in the one axis on demand as well.


Would the ladder logic route be good enough or are there some other 
suggestions?


-- Original Message --
From: "Alexander Rössler" <alexander@roessler.systems>
To: "Enhanced Machine Controller (EMC)" 
<emc-users@lists.sourceforge.net>

Cc: "Marius Liebenberg" <mar...@mastercut.co.za>
Sent: 2018-04-04 09:24:43
Subject: Re: [Emc-users] One servo system

Machinekit + PocketBeagle is good combo if you are looking for 
something

running Linux.

Chris Albertson writes:


 Of course.   Write a PID based control loop and put it an something
 like an Arduino.  I've done this a few times the control the wheels 
of

 a mobile robot.

 The details depend on the interfaces to botkhthe motoring the higher
 level control


 As for higher level control...  Is it a human using a joystick or 
some

 kind of automation that does the same thing repetivity  or must the
 device interact with the environment some how.  Perhaps opening a for
 as a person approaches.

 Then I have to ask what kind of hardware driver you have.   Some
 drivers do most of the work for you.  These might take a
 step/direction pulse, r have an analog input.  But other drivers are
 just an H-Bridge and raw encoder signals.This is the kind of
 serves I use.   I end u using a small micro controler (Arduino or
 ARM-M) and relaying on a PID library.

 In ant case most of your effort will be spent in the interfaces not
 the actual PID control loop as that is just a few calls to a PID
 library

 On Wed, Mar 28, 2018 at 8:15 AM, Marius Liebenberg
 <mar...@mastercut.co.za> wrote:

 Hi all
 I have to put together a system that will use one servo to drive a 
small
 platform over a distance of 6m at a speed of about 25km/h or 8m/s or 
there

 about.

 I feel that using a full computer and mesa card for just one axis 
that does
 not need a display sounds a bit excessive. The question is what are 
the

 other options if any.



 -
 Regards / Groete

 Marius D. Liebenberg
 +27 82 698 3251
 +27 12 743 6064
 
--

 Check out the vibrant tech community on one of the world's most
 engaging tech sites, Slashdot.org! http://sdm.link/slashdot
 ___
 Emc-users mailing list
 Emc-users@lists.sourceforge.net
 https://lists.sourceforge.net/lists/listinfo/emc-users



--
Alexander Rössler
HMI Expert at Rössler Systems
Tel: +43 680 1348338
Web: https://roessler.systems
Blog: https://machinekoder.com
alexander@roessler.systems
Lebnergasse 1/7/7
1210 Wien - Austria
ATU72251528

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Re: [Emc-users] What RPM

[Marius Liebenberg]

There's a saying "It is not over until the fat lady sings"  now for us 
here it reads "It's not over until Andy has chipped in his bit". Just to 
keep us all on our toes and in line. Thanks Andy, very useful 
information and it just serves to make one feel confident from the start 
that you are not wasting your money on another failed attempt at 
building a special machine.



-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>

Sent: 2018-04-02 21:44:36
Subject: Re: [Emc-users] What RPM

On 2 April 2018 at 15:23, Marius Liebenberg <mar...@mastercut.co.za> 
wrote:


 The spindle in the picture is what is currently fitted to the machine 
and I
 would like to refurbish and use it. The question I have is what RPM 
will I

 be able to run the spindle seeing that it uses these brass bearings?


My Rivett lathe is good for 1600rpm and has similar bearings. Your
bearings look smaller, and therefore can go faster.

The internet says:
 "Depending on material max shaft speed 1.25 to 5m/s
(non leaded bronzes, up to approx 2.5m/s)"

If the shaft is 25mm dia then 2.5m/s = 31 rps = 1900rpm.

(the extremes give 950 to 3800 rpm.)

--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] What RPM

[Marius Liebenberg]

Probably about 25mm shaft. So as I need 1000 to 1500 RPM for the 
plastics it seems doable then.


-- Original Message --
From: "Ed" <ate...@mwt.net>
To: emc-users@lists.sourceforge.net
Sent: 2018-04-02 16:58:56
Subject: Re: [Emc-users] What RPM


On 04/02/2018 09:23 AM, Marius Liebenberg wrote:

Hi
I have had this piece of machine in the store for a long time. I think 
it was used to decant fishing line to the smaller plastic reels.
I have a need for a small dedicated lathe that will onpy cut soft 
materials like plastic and aluminium occasionally.
The spindle in the picture is what is currently fitted to the machine 
and I would like to refurbish and use it. The question I have is what 
RPM will I be able to run the spindle seeing that it uses these brass 
bearings?
Depending on diameter, I would treat it like an old lathe with bronze 
bearings. 1000 RPM should be no problem with adequate oil lube.


Ed.


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Re: [Emc-users] What RPM

[Marius Liebenberg]

Gene it is sitting fully submerged and that groove is on the top half of 
the bearing so it should have a lot of oil on the bearing surface.


I dont need more than 1000 or 1500 RPM for the plastics.

-- Original Message --
From: "Gene Heskett" <ghesk...@shentel.net>
To: emc-users@lists.sourceforge.net
Sent: 2018-04-02 17:33:21
Subject: Re: [Emc-users] What RPM


On Monday 02 April 2018 10:23:33 Marius Liebenberg wrote:


 Hi
 I have had this piece of machine in the store for a long time. I 
think

 it was used to decant fishing line to the smaller plastic reels.
 I have a need for a small dedicated lathe that will onpy cut soft
 materials like plastic and aluminium occasionally.
 The spindle in the picture is what is currently fitted to the machine
 and I would like to refurbish and use it. The question I have is what
 RPM will I be able to run the spindle seeing that it uses these brass
 bearings?


I am seeing an unusual lube distribution system in those bushings. Is
there a lube pump and reservoir associated? Something that would assure
a continuous flow of lube into the end grooves and thence lengthwise
thru the groove I can see running lengthwise in the left half of each?
With such a system running, and delivering a 1/2 cup of clean 0 to 5w
oil a minute, I could see it spinning 30k revs. The rev limit would be
how much heat the viscosity of the oil used was caused to be generated.
Monitor with an IR thermometer. Personally, the oil will start to fail
at around 300F, so seeing 150F on the bushing holder would make me slow
it down.

If nothing of that sort of circulating lubricant exists, and its equipt
with flip cap oilers, then some 30-50w oil to try and hold the
hydrodynamic film, refreshed hourly might allow 2500 revs, depending on
the load and any imbalance that might exist. Because the hydrodynamic
forces are rpm dependent, there is of course a minimum speed that 
should

be maintained when its carrying any lateral load.

I get the impression that what little evidence of wear I see was caused
by this minimum speed being violated, probably at startup and shutdown
times.  The small cross-section of the shaft will allow some flexure
under load which may have overpowered the hydrodynamics, allowing some
metal to metal contact, and that might have worn the bushings a bit
bell-mouthed. With sharp tooling and copious coolant, it should do
plastics and alu at decent cutting speeds just fine. Add the forced 
lube
and 10k+ rpms should be doable. Watch it with an IR thermometer, and 
let

it tell you when it needs forced lube.


 -
 Regards / Groete

 Marius D. Liebenberg
 +27 82 698 3251
 +27 12 743 6064


--
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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Re: [Emc-users] What RPM

[Marius Liebenberg]

It looks like the bearings were submerged in oil on the the machine as 
both are sitting in a sump with oil drain each. The top bearing has  
large feed groove for the oil. That will only work if submerged.


-- Original Message --
From: "jeremy youngs" 
To: "Enhanced Machine Controller (EMC)" 


Sent: 2018-04-02 17:13:17
Subject: Re: [Emc-users] What RPM


600 continuously and 1000 for short periods with light load. You should
also get wick style oilers for it
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[Emc-users] One servo system

[Marius Liebenberg]

Hi all
I have to put together a system that will use one servo to drive a small 
platform over a distance of 6m at a speed of about 25km/h or 8m/s or 
there about.


I feel that using a full computer and mesa card for just one axis that 
does not need a display sounds a bit excessive. The question is what are 
the other options if any.




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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[Emc-users] How to setup a system for Uspace

[Marius Liebenberg]

Hi

I have been having a hard time getting a system setup to run uspace in 
order to use the mesa 7i76.
I installed a fresh Debian 9 on a machine. Then I installed the RT 
kernel as suggested here 
(http://linuxcnc.org/docs/html/getting-started/getting-linuxcnc.html)
This seemed to work fine but the PC was old and could not handle the 
latency. Someone suggested that I use the latest live CD image from here 
(http://www.linuxcnc.org/testing-stretch-rtpreempt/linuxcnc-stretch-uspace-amd64-r9.iso) 
This I did only to discover that they used an old version of Gmoccapy on 
this distribution which naturally will fail as it does not include the 
fixes that the author done on later versions.


I have spent forty hours already on a job that I quoted 10 hours on and 
still I dont have a working system. I beginning to feel that the sanity 
of linuxcnc is slowly slipping away to be left with something that only 
guru developers will be able to use and setup in the future.


What is the the best way to get a uspace system installed in order for 
me to use the mesa 7i76e products on? Please share some of your 
experiences and methods with the lowly populous.




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064


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Re: [Emc-users] Path Pilot on LinuxCNC -- Was MachineKit on the BeagleBone Black

[Marius Liebenberg]

Not sure what the conditions are but I dont remember any restrictions.
Please PM me for the link.

-- Original Message --
From: "Chris Albertson" <albertson.ch...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>

Sent: 2017-10-13 20:52:23
Subject: Re: [Emc-users] Path Pilot on LinuxCNC -- Was MachineKit on the 
BeagleBone Black


I assume it is redistributable.  Can you place the data some place 
where others can see it?


On Fri, Oct 13, 2017 at 4:30 AM, Marius Liebenberg 
<mar...@mastercut.co.za> wrote:
I have a source code CD that I paid $10 for to cover shipping and 
other costs.



 Tormach says they don't support path pilot on 3rd party equipment.   
It

 likely
 depends on specialized hardware so it would not run without 
modification

 and I don't think they have source code available.



As a derivative of a GPL licensed project I thought that they would 
be

required to make the source available.
Has anybody asked for the source to see what they say? The little I 
have

dealt with them they
always seemed very forthcoming with information and to be straight 
forward

and honest folks.

Cheers,
Kurt
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--

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Path Pilot on LinuxCNC -- Was MachineKit on the BeagleBone Black

[Marius Liebenberg]

I have a source code CD that I paid $10 for to cover shipping and other 
costs.



 Tormach says they don't support path pilot on 3rd party equipment.   It

 likely
 depends on specialized hardware so it would not run without 
modification

 and I don't think they have source code available.



As a derivative of a GPL licensed project I thought that they would be
required to make the source available.
Has anybody asked for the source to see what they say? The little I 
have

dealt with them they
always seemed very forthcoming with information and to be straight 
forward

and honest folks.

Cheers,
Kurt
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Re: [Emc-users] Mesa RS-422 examples

[Marius Liebenberg]

 On 11 September 2017 at 04:44, Marius Liebenberg 
<mar...@mastercut.co.za> wrote:



 I Is there anyone out there that
 has some examples that I can look at to get started please?
 Or some advise will do as well thanks.


Take a look at:
https://github.com/LinuxCNC/linuxcnc/blob/master/src/hal/drivers/mesa_uart.comp


That will work almost as is. I only have a few fixed bytes per packet to 
send and receive. I can the do a component that will handle the GUI 
stuff from and to the packet.


--
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"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] Mesa RS-422 examples

[Marius Liebenberg]

 Thanks Eric. I assumed that it would be a packet protocol. I just did a
packet radio link on a SAMD21. Those are many as you said.
I was more looking for HAL side of things or a python script that make
use of the RS-422 of the mesa. More the system integration side of
things I think.

-- Original Message --
From: "Erik Christiansen" <dva...@internode.on.net>
To: emc-users@lists.sourceforge.net
Sent: 2017-09-11 14:40:15
Subject: Re: [Emc-users] Mesa RS-422 examples


TL;DR: Potted solutions are at the end.

On 11.09.17 11:44, Marius Liebenberg wrote:

 Hi
 I need to write a custom RS-422 protocol to control a plasma cutter.
I have
 a mesa 7i44 (amongst other's ) on the system.
 I have never used or seen any examples of how to communicate to
custom
 hardware vie the RS-422 on the mesa cards. Is there anyone out there
that
 has some examples that I can look at to get started please?
 Or some advise will do as well thanks.


There will be some simple serial packet protocol or other out there in
the googleverse, but the fundamentals are:

+  It's a serial packet protocol, and whether it's RS485,RS422, or
RS232
   on the physical layer doesn't amount to a hill of beans, except that
   RS422 tells us that it's point-to-point, so destination addresses
   aren't really needed.

+  Writing packet assembly code is simple - it's stacking bytes in a
   buffer. The packet parser at the receiving end is a little bit more
   work, which you might like to re-use on a subsequent project - so
   maybe add source and destination address bytes to the packet, even
if
   you just dump them on receipt, at this stage.

+  So a simple packet would look something like this sequence of bytes:
   A recognisable header byte, i.e. a constant, e.g. 0x47 = 'G'
   Destination address. 0 - 255
   Source address. 0 - 255
   Length If this is included, you have the option of variable
  length packets. The count need only cover the
variable
  payload.
   Payload bytes.
   ...
   How many do you need to tell a plasma cutter how to dance?
   CRC or simple checksum byte.

The packet parser is a state machine which ignores anything received
until a header is seen, then advances statewise as packet bytes are
parsed. It's a really good idea to checksum each received packet, and
request a resend if it is corrupted. That's Transport Layer logic.

Packet queues at Tx and Rx ends are needed, unless backward ACK/NACK is
used to stop Tx if Rx isn't ready. If the plasma cutter can do only one
thing at the time, that might do for starters.

DIY can be weeks of work before it's reasonably capable and reliable,
so
let's now run "AVR embedded packet protocol" up the flagpole. Ah, the
second hit is: https://en.wikipedia.org/wiki/Cubesat_Space_Protocol
and it's good to go on 8 bit AVR and 32 bit ARM chips (whoops, is that
my bias showing? That's what I'd put on the Rx end.)

It's written in 'C', so nicely portable, and runs in a number of POSIX
environments, including FreeRTOS and Linux. So it's compatible with a
LinuxCNC host and an embedded slave. It might be worth a look.

Modbus will be suggested. I've not used it. It would be significant
overkill, but if there is free source to be had, then you'll not need
more than that to talk to a plasma cutter. Trying "modbus beaglebone
linux" gives enough hits to suggest that it would be feasible to drop a
beaglebone in on the Rx end, drop the code in, and maybe have it up in
an afternoon.

Erik

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[Emc-users] Mesa RS-422 examples

[Marius Liebenberg]

Hi
I need to write a custom RS-422 protocol to control a plasma cutter. I 
have a mesa 7i44 (amongst other's ) on the system.
I have never used or seen any examples of how to communicate to custom 
hardware vie the RS-422 on the mesa cards. Is there anyone out there 
that has some examples that I can look at to get started please?

Or some advise will do as well thanks.


-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064


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Re: [Emc-users] (no subject)

[Marius Liebenberg]

Hi Johan

You will have to provide a bit more detail in order to get assistance.
Please explain what you mean by "does not hold size at all"
Explain how:
1) you discovered the problem and
2) how you measured the result and
3) what you done to solve it thus far.

Also give details on the controller version and GUI that you use.

-- Original Message --
From: "Johann Beukes" 
To: emc-users@lists.sourceforge.net
Sent: 2017-08-28 06:12:00
Subject: [Emc-users] (no subject)


Hi guys
I am struggeling alot with my lathe X axis. The machine does not hold 
size
at all. I am using The Leadshine ESM-22430 motor and the DS808 drive. 
The

Dirsetup is set at 2500, Dirhold 2500, Steplen 5000, Stepspace 5000 and
stepscale at -322. The ballscrew has a 2.5mm pitch and the steps per 
rev

are set at 800.
Can anybody please give me some advice?
Thanks
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Re: [Emc-users] Servo - Velocity or Position mode

[Marius Liebenberg]

I would go with analog. It is much easier to tune using Halscope than 
trying to tune the drives by ear or relying on auto tuning which in my 
experience doesn't work very well. Additionally if you get drive faults 
due to following errors it is much harder to figure out what is going 
on. With LinuxCNC handling the PID loop you can use Halscope to see 
exactly what is going on. Being able to actually see what is going on 
is so useful when trying to track down problems.


About a year ago I retrofitted a router with pulse controlled brushless 
servos, using Eding CNC instead of LinuxCNC. I spent ages on that 
machine tracking down intermittent following error trips. As it turned 
out the problem was actually a bug in Eding CNC but even then, if I had 
access to tools like Halscope I would have found the problem within 
hours rather than weeks. Unfortunately the customer did not want 
anything to do with Linux.


That is sad. Linux is not a dark art anymore. I looked at the data sheet 
carefully and I agree with you about using the analog system. The 
machine does not have a Z axis so I have to fit one. Getting servos over 
here is not that easy so I initially thought to go the pulse route. I 
suppose a small servo and drive would not be to hard to find on eBay.




Les


Hi

I have to upgrade and convert an old machine that was used to cut with
gas. It uses some Panasonic MCDHT3520 servo drives.
These drives has a pulsed input for position and an analog +- 10v 
input

for velocity mode.
The question is what mode is better to use with LCNC and Mesa cards,
velocity or position?

I will use one of the Ethernet solutions from Mesa with a panel PC.

-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064





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[Emc-users] Servo - Velocity or Position mode

[Marius Liebenberg]

Hi

I have to upgrade and convert an old machine that was used to cut with 
gas. It uses some Panasonic MCDHT3520 servo drives.
These drives has a pulsed input for position and an analog +- 10v input 
for velocity mode.
The question is what mode is better to use with LCNC and Mesa cards, 
velocity or position?


I will use one of the Ethernet solutions from Mesa with a panel PC.

-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064



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Re: [Emc-users] Drive options with 7i76

[Marius Liebenberg]

 On 16 July 2017 at 14:33, Gene Heskett  wrote:



 Is there a clever way to drive this with with 7i76.


Possibly with a DC boost converter. Do you have 10V anywhere else?


No not at all. I was wondering if I could use a voltage divider to bring 
the 24v down to 12v at least as the 7i76 spindle drive will work up to 
15v.

The 7i76 spindle drive emulates a pot that can handle up to 15v


--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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[Emc-users] Drive options with 7i76

[Marius Liebenberg]

Hi

I have to replace my lathe drive and the one I have does not have a 10v
source for the 7i76 card produce the 0 - 10v signal.


Is there a clever way to drive this with with 7i76.



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064


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[Emc-users] Forum notifications broken

[Marius Liebenberg]

Hi
I have been recieving big blue pages from the forum notification 
service. So I cannot click on the message tot ake me to the forum topic 
as it is just blue. Anyone else with this problem. I am using eM Client.



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064


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Re: [Emc-users] Did the Forum crash

[Marius Liebenberg]

>>  On 28 November 2016 at 19:46, Marius Liebenberg 
>><mar...@mastercut.co.za>
>>  wrote:
>>  > Did the forum crash? I am missing all my topics or did I miss some 
>>event
>>  > here?
>>
>>  I haven't spotted anything unexpected
>>
>>
>>
>I did a search in the forum for "Marius" and found a whole list of 
>entries
>(35 it says):
>https://forum.linuxcnc.org/forum/search?searchuser=Marius=1
>
>When I click on your name, there's a picture of some 'guy' that looks 
>like
>he's in an airplane (with a headset) and maybe a 9x20 lathe, or 
>something
>of similar size.
Yes that ugly bugger is me. I was flying an Ikarus C42 and my lathe is a 
9 x 20 Chinese something that I converted into CNC.

>
>Seems you have a lot of posts on the forum...
>Mark
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Re: [Emc-users] Did the Forum crash

[Marius Liebenberg]

>On Mon, Nov 28, 2016 at 3:00 PM, andy pugh <bodge...@gmail.com> wrote:
>
>>  On 28 November 2016 at 19:46, Marius Liebenberg 
>><mar...@mastercut.co.za>
>>  wrote:
>>  > Did the forum crash? I am missing all my topics or did I miss some 
>>event
>>  > here?
>>
>>  I haven't spotted anything unexpected
>>
>>
>>
>I did a search in the forum for "Marius" and found a whole list of 
>entries
>(35 it says):
>https://forum.linuxcnc.org/forum/search?searchuser=Marius=1
Yet when I click on "My Topics" I get two. That is the link I used to 
get to some historical information and discussions I partook in. A very 
useful feature but now it shows that I only ever partook in two topics. 
Nether of which I even started :(


>
>When I click on your name, there's a picture of some 'guy' that looks 
>like
>he's in an airplane (with a headset) and maybe a 9x20 lathe, or 
>something
>of similar size.
>
>Seems you have a lot of posts on the forum...
>Mark
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[Emc-users] Did the Forum crash

[Marius Liebenberg]

Did the forum crash? I am missing all my topics or did I miss some event 
here?



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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Re: [Emc-users] Problem with servo setup --> tune mode

[Marius Liebenberg]

I take it that the PID values that where calculated will be seen in 
halshow for that PID? One can then use those in the normal PID setup.

-- Original Message --
From: "Nicklas Karlsson" <nicklas.karlsso...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-10-25 17:58:00
Subject: Re: [Emc-users] Problem with servo setup --> tune mode

>Did you try the tune mode?
>
>It could be found in the hal configuratio and set via "setp" command. 
>Manual http://linuxcnc.org/docs/html/man/man9/at_pid.9.html further 
>down on page "pid.N.tune-"
>
>
>
>
>
>On Tue, 25 Oct 2016 06:16:04 +
>"Marius Liebenberg" <mar...@mastercut.co.za> wrote:
>
>>  Hi All
>>  I have a problem with a machine using servos. It is a 4 axis machine
>>  with the 4th axis being rotary. The linear servos are tuned and 
>>working
>>  very well but the rotary axis is not behaving well. It has a severe
>>  oscillation and I cannot seem to get the PID trimmed to stabilize the
>>  servo.
>>
>>  The 4th axis used to be a stepper and that worked well but we changed
>>  the stepper for a servo to get more speed through a reduction 
>>planetary
>>  gearbox.
>>  I attached the HAl and INI files. Maybe I missed the obvious again
>>
>>  The setup is like this: I use a 5i23 with two H Bridges from Mesa.
>>  Remaining ports has a 7i33 and a 7i37 to drive the 4th axis servo and 
>>do
>>  some I/O.
>>
>>  -
>>  Regards / Groete
>>
>>  Marius D. Liebenberg
>>  +27 82 698 3251
>>  +27 12 743 6064
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Re: [Emc-users] Problem with servo setup

[Marius Liebenberg]

The feedback comes from the rotary encoder that is attached to the back 
end of the servo shaft. So no backlash there.


-- Original Message --
From: "Kirk Wallace" <kwall...@wallacecompany.com>
To: emc-users@lists.sourceforge.net
Sent: 2016-10-25 18:46:32
Subject: Re: [Emc-users] Problem with servo setup

>On 10/24/2016 11:16 PM, Marius Liebenberg wrote:
>>  Hi All
>>  I have a problem with a machine using servos. It is a 4 axis machine
>>  with the 4th axis being rotary. The linear servos are tuned and 
>>working
>>  very well but the rotary axis is not behaving well. It has a severe
>>  oscillation and I cannot seem to get the PID trimmed to stabilize the
>>  servo.
>
>This sounds similar to a setup with a linear scale used as feedback as
>opposed to a rotary encoder on the motor. This configuration usually 
>has
>a lot of backlash between the motor position (command input) and the
>scale (feedback). When a command is invoked it can take quite a while
>for the feedback to show up. This makes the control loop unstable
>because corrections always come too late. I would connect HALscope to
>check the delay between the loop command and feedback. Ideally, 
>feedback
>should start coming in on the next servo period after a command.
>
>
>--
>Kirk Wallace
>http://www.wallacecompany.com/machine_shop/
>http://www.wallacecompany.com/E45/
>
>--
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Re: [Emc-users] Problem with servo setup --> tune mode

[Marius Liebenberg]

  I have not. Dont know how I did not know about this. I will try it.

>Did you try the tune mode?
>
>It could be found in the hal configuratio and set via "setp" command. 
>Manual http://linuxcnc.org/docs/html/man/man9/at_pid.9.html further 
>down on page "pid.N.tune-"
>
>
>
>
>
>On Tue, 25 Oct 2016 06:16:04 +
>"Marius Liebenberg" <mar...@mastercut.co.za> wrote:
>
>>  Hi All
>>  I have a problem with a machine using servos. It is a 4 axis machine
>>  with the 4th axis being rotary. The linear servos are tuned and 
>>working
>>  very well but the rotary axis is not behaving well. It has a severe
>>  oscillation and I cannot seem to get the PID trimmed to stabilize the
>>  servo.
>>
>>  The 4th axis used to be a stepper and that worked well but we changed
>>  the stepper for a servo to get more speed through a reduction 
>>planetary
>>  gearbox.
>>  I attached the HAl and INI files. Maybe I missed the obvious again
>>
>>  The setup is like this: I use a 5i23 with two H Bridges from Mesa.
>>  Remaining ports has a 7i33 and a 7i37 to drive the 4th axis servo and 
>>do
>>  some I/O.
>>
>>  -
>>  Regards / Groete
>>
>>  Marius D. Liebenberg
>>  +27 82 698 3251
>>  +27 12 743 6064
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Re: [Emc-users] Problem with servo setup

[Marius Liebenberg]

The ratio is 40:1. If I make the pulses per rev very high the system 
becomes stable but the calibration is out off course. This supports your 
idea I think if I understand you correctly.

-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-10-25 14:01:06
Subject: Re: [Emc-users] Problem with servo setup

>On 25 October 2016 at 07:16, Marius Liebenberg <mar...@mastercut.co.za> 
>wrote:
>
>>  The 4th axis used to be a stepper and that worked well but we changed 
>>the
>>  stepper for a servo to get more speed through a reduction planetary 
>>gearbox.
>>  I attached the HAl and INI files.
>
>What is the ratio of the gearbox?
>
>I think I would expect much smaller gains for a rotary than for a
>linear with the same servo.
>Simplistically, one full revolution out-of-position for the linear
>axis might be 2mm, but one full motor-rev out-of-position for the
>rotary is 36 degrees with a 10:1 gearbox.
>
>That is about a 20x difference, and I would anticipate a 20:1 ratio in
>PID gains to match.
>
>--
>atp
>"A motorcycle is a bicycle with a pandemonium attachment and is
>designed for the especial use of mechanical geniuses, daredevils and
>lunatics."
>— George Fitch, Atlanta Constitution Newspaper, 1916
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Re: [Emc-users] Problem with servo setup

[Marius Liebenberg]

Hi Rene
I am using the standard analog servo channel on the 7i37 with an encoder 
feedback that comes from the servo drive.

-- Original Message --
From: "Rene Hopf" <reneh...@mac.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-10-25 12:19:49
Subject: Re: [Emc-users] Problem with servo setup

>Hi,
>First thing I notice, you dont have any ff term. I guess you have ho 
>external current or velocity regulator, just a position pid outputting 
>voltage via pwm?
>That is not really the best setup, but still should be possible to 
>tune…
>
>Rene
>
>>  On 25 Oct 2016, at 08:16, Marius Liebenberg <mar...@mastercut.co.za> 
>>wrote:
>>
>>  Hi All
>>  I have a problem with a machine using servos. It is a 4 axis machine 
>>with the 4th axis being rotary. The linear servos are tuned and 
>>working very well but the rotary axis is not behaving well. It has a 
>>severe oscillation and I cannot seem to get the PID trimmed to 
>>stabilize the servo.
>>
>>  The 4th axis used to be a stepper and that worked well but we changed 
>>the stepper for a servo to get more speed through a reduction 
>>planetary gearbox.
>>  I attached the HAl and INI files. Maybe I missed the obvious again
>>
>>  The setup is like this: I use a 5i23 with two H Bridges from Mesa. 
>>Remaining ports has a 7i33 and a 7i37 to drive the 4th axis servo and 
>>do some I/O.
>>
>>  -
>>  Regards / Groete
>>
>>  Marius D. Liebenberg
>>  +27 82 698 3251
>>  +27 12 743 6064
>>  >Attachment.png><5i23_router.ini><5i23_router_4th.hal>--
>>  The Command Line: Reinvented for Modern Developers
>>  Did the resurgence of CLI tooling catch you by surprise?
>>  Reconnect with the command line and become more productive.
>>  Learn the new .NET and ASP.NET CLI. Get your free copy!
>>  
>>http://sdm.link/telerik___
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>>  https://lists.sourceforge.net/lists/listinfo/emc-users
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[Emc-users] Problem with servo setup

[Marius Liebenberg]

Hi All
I have a problem with a machine using servos. It is a 4 axis machine 
with the 4th axis being rotary. The linear servos are tuned and working 
very well but the rotary axis is not behaving well. It has a severe 
oscillation and I cannot seem to get the PID trimmed to stabilize the 
servo.


The 4th axis used to be a stepper and that worked well but we changed 
the stepper for a servo to get more speed through a reduction planetary 
gearbox.

I attached the HAl and INI files. Maybe I missed the obvious again

The setup is like this: I use a 5i23 with two H Bridges from Mesa. 
Remaining ports has a 7i33 and a 7i37 to drive the 4th axis servo and do 
some I/O.


-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064


5i23_router.ini
Description: Binary data


5i23_router_4th.hal
Description: Binary data
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Re: [Emc-users] Plasma Torch Height Control

[Marius Liebenberg]

I have one concern about the use of serial interface for THC. The serial 
components are notoriously slow and sometimes are very far behind the 
real-time events. With THC you need very fast and in time movements. 
Unless there is an interface to the Mesa serial channels, I would be 
cautious to implement a design without proper testing as far as latency 
is concerned.

-- Original Message --
From: "Klemen Živkovič" 
To: "Enhanced Machine Controller (EMC)" 

Sent: 2016-09-12 21:06:28
Subject: Re: [Emc-users] Plasma Torch Height Control

>I can see some plasma machines have serial interface also (
>http://forum.robotsinarchitecture.org/index.php?action=dlattach;topic=232.0;attach=335).
>Also found this thread -
>https://forum.linuxcnc.org/forum/27-driver-boards/21445-rs-485-with-7i76.
>Is serial plasma control over "plasma/serial" component good practice? 
>If
>yes maybe somebody knows is there already such plasma serial component 
>that
>is connected to THC component? Can somebody share or point me to 
>hal/ini
>setup in that case?
>
>regards
>Zhivko
>
>On Mon, Sep 12, 2016 at 7:41 PM, John Thornton  wrote:
>
>>  I'd bet it does both and it may even have a output for ark ok...
>>
>>  JT
>>
>>  On 9/12/2016 8:53 AM, Alexander Brock wrote:
>>  > On 09/11/2016 04:22 PM, John Thornton wrote:
>>  >> Does is have connections to measure the tip voltage?
>>  > I'm not exactly sure, it has a connection named "CNC" and it might 
>>be
>>  > either an input for starting / stopping the cutting or an output 
>>for
>>  > measuring tip voltage.
>>  >
>>  > Best Regards,
>>  > Alexander
>>  >
>>  >
>>  >
>>  > 
>>  --
>>  >
>>  >
>>  > ___
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>>  > https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>>  
>>  --
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>>  traffic
>>  patterns at an interface-level. Reveals which users, apps, and 
>>protocols
>>  are
>>  consuming the most bandwidth. Provides multi-vendor support for 
>>NetFlow,
>>  J-Flow, sFlow and other flows. Make informed decisions using capacity
>>  planning reports. http://sdm.link/zohodev2dev
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Re: [Emc-users] Plasma Torch Height Control

[Marius Liebenberg]

You only need to monitor the cutting voltage of the arc.

-- Original Message --
From: "Alexander Brock" 
To: emc-users@lists.sourceforge.net
Sent: 2016-09-10 00:59:32
Subject: Re: [Emc-users] Plasma Torch Height Control


On 09/09/2016 10:58 PM, John Thornton wrote:

 Most LinuxCNC users use this one as do I.
 
http://mesaus.com/index.php?route=product/product=65_id=64

 or
 
http://mesaus.com/index.php?route=product/product=65_id=65

 depending on your plasma torch.


Thank you for your answer

I have a HF arc start with pilot arc functionality, there are 3 cables:
- thick cable for +, connected to torch
- thinn cable for pilot arc ignition, also connected to torch
- thick cable for -, connected to clamp which I attach to the material 
I

want to cut.

Do I need 2 of the AD converters to monitor cutting arc and pilot arc?
What would be an appropriate resistor to protect the THCAD?

Best Regards,
Alexander
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Re: [Emc-users] Plasma Torch Height Control

[Marius Liebenberg]

The cncprofi work very well and with no fuss. I used it many times.


-- Original Message --
From: "Alexander Brock" 
To: "Enhanced Machine Controller (EMC)" 

Sent: 2016-09-09 20:57:50
Subject: [Emc-users] Plasma Torch Height Control

>Hi,
>
>I recently bought a Plasma Cutter and built a CNC router and now I want
>to add a Torch Height Control to it.
>
>I found these models, does anyone have experience with them or
>experience with other THC systems?
>
>http://www.ebay.de/itm/172288076009
>http://www.ebay.de/itm/262439946439
>http://www.cncprofi.eu/product_info.php?info=p860_profi-plasmabrenner-hoehe-controller-thc.html
>
>Best Regards,
>Alexander
>
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Re: [Emc-users] Ubuntu Lucid package server

[Marius Liebenberg]

Thank for the good advice Tom, I will have to do this for the PathPilot 
machine for sure.

-- Original Message --
From: "TJoseph Powderly" <tjt...@gmail.com>
To: "Enhanced Machine Controller (EMC)" 
<emc-users@lists.sourceforge.net>
Sent: 2016-08-06 15:57:50
Subject: Re: [Emc-users] Ubuntu Lucid package server

>set your apt tool to KEEP any downloads
>occasionally dupe the cache
>you will end up with a local set of debs to install
>googling 'install downloaded debs'
>gets you...
>"""
>You can *install* it using apt-get *install* package_name . But first
>move your *deb* file to /var/cache/apt/archives/ directory. After
>executing this command, it will automatically *download* its
>dependencies. *Install* gdebi and open your .*deb* file using it
>(Right-click -> Open with).
>"""
>theres many more ways to do this
>but
>“/God bless the child/ that's got his /own"
>/billie holiday
>
>tomp tjtr33
>
>On 08/06/16 20:07, John Thornton wrote:
>>  Change your /etc/apt/sources.list to the following, the linuxcnc deb
>>  should not be changed
>>
>>  deb http://old-releases.ubuntu.com/ubuntu/ lucid main restricted
>>  universe multiverse
>>  deb http://old-releases.ubuntu.com/ubuntu/ lucid-updates main 
>>restricted
>>  universe multiverse
>>  deb http://old-releases.ubuntu.com/ubuntu/ lucid-security main
>>  restricted universe multiverse
>>  deb http://old-releases.ubuntu.com/ubuntu/ lucid-backports main
>>  restricted universe multiverse
>>
>>  JT
>>
>>
>>  On 8/6/2016 5:52 AM, Marius Liebenberg wrote:
>>>  Does anyone know of a package server for Ubuntu 10.04 Lucid that is
>>>  still up and running. Since the support for Lucid was dropped I 
>>>cannot
>>>  update or install any packages on my PathPilot machine. I had to
>>>  reinstall the machine as it dropped the hard drive. Now with no 
>>>support
>>>  for Lucid I cannot get any packages.
>>>
>>>
>>>
>>>  -
>>>  Regards / Groete
>>>
>>>  Marius D. Liebenberg
>>>  +27 82 698 3251
>>>  +27 12 743 6064
>>>  
>>>--
>>>  ___
>>>  Emc-users mailing list
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>>>  https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>>  
>>--
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>--
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Re: [Emc-users] Ubuntu Lucid package server

[Marius Liebenberg]

Thanks John. you are a star.

-- Original Message --
From: "John Thornton" <j...@gnipsel.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-08-06 15:07:32
Subject: Re: [Emc-users] Ubuntu Lucid package server

>Change your /etc/apt/sources.list to the following, the linuxcnc deb 
>should not be changed
>
>deb http://old-releases.ubuntu.com/ubuntu/ lucid main restricted 
>universe multiverse
>deb http://old-releases.ubuntu.com/ubuntu/ lucid-updates main 
>restricted universe multiverse
>deb http://old-releases.ubuntu.com/ubuntu/ lucid-security main 
>restricted universe multiverse
>deb http://old-releases.ubuntu.com/ubuntu/ lucid-backports main 
>restricted universe multiverse
>
>JT
>
>
>On 8/6/2016 5:52 AM, Marius Liebenberg wrote:
>>Does anyone know of a package server for Ubuntu 10.04 Lucid that is
>>still up and running. Since the support for Lucid was dropped I cannot
>>update or install any packages on my PathPilot machine. I had to
>>reinstall the machine as it dropped the hard drive. Now with no 
>>support
>>for Lucid I cannot get any packages.
>>
>>
>>
>>-
>>Regards / Groete
>>
>>Marius D. Liebenberg
>>+27 82 698 3251
>>+27 12 743 6064
>>--
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[Emc-users] Ubuntu Lucid package server

[Marius Liebenberg]

Does anyone know of a package server for Ubuntu 10.04 Lucid that is 
still up and running. Since the support for Lucid was dropped I cannot 
update or install any packages on my PathPilot machine. I had to 
reinstall the machine as it dropped the hard drive. Now with no support 
for Lucid I cannot get any packages.



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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Re: [Emc-users] Plasma Mistake

[Marius Liebenberg]

Jim
The filter actually goes on the plasma arc voltage. It is filtered and 
reduced and rectified. Then it does not matter what happens to the torch 
and the earth clamp.
One thing that most people do not realize is that the plasma arc is at 
negative potential to earth. So the earth clamp is really the positive 
terminal and the arc voltage is the negative terminal.

-- Original Message --
From: "Jim Craig" <jimcraig5...@windstream.net>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-05-20 16:47:29
Subject: Re: [Emc-users] Plasma Mistake

>Marius,
>
>That may be some good advice there. As it turns out the only items that 
>were fried were items that were powered by the 5V wall wart power 
>supply. This may be coincidence but it may not be either.
>
>The stepper drives survived as they are powered by a switching power 
>supply which I assume already has the HF filter built in.
>
>The computer also survived but we may want to switch to a UPC instead 
>of a power switch for further protection.
>
>I would need to put the HF filter prior to the 5V power supply. I 
>actually happen to have one of them laying around from a previous 
>project. Would the wall wart be sufficient on the other side of the HF 
>filter or should we find another power supply for our 5V needs?
>
>Thanks,
>
>Jim
>
>
>
>On 5/20/2016 9:12 AM, Marius Liebenberg wrote:
>>This is the reason that I prefer a proper input filter network that
>>will make sure that things stay in tact even with the earth clamp not
>>connected. I have done that many times and never broke any 
>>electronics.
>>
>>The circuit has a HF filter (pie) and a divider as well as a 
>>rectifier.
>>Then you connect your stuff to this filter and the polarity is always
>>correct and can be referenced to the circuit ground.
>>
>>
>>-- Original Message --
>>From: "Jim Craig" <jimcraig5...@windstream.net>
>>To: "emc-users" <emc-users@lists.sourceforge.net>
>>Sent: 2016-05-19 15:13:32
>>Subject: [Emc-users] Plasma Mistake
>>
>>>So my goal is to let others learn from my mistakes. So in that way I
>>>tend to make a lot of them so everyone can benefit. Last night I was
>>>working with the plasma machine and made a big one!
>>>
>>>Don't ever forget to hook up the ground to the plasma cutter!
>>>
>>>When we hit the go button the program started. The torch found the
>>>material. The pilot arc started and BAM everything stopped. Realtime
>>>error in LinuxCNC. Cleared repowered the machine and nothing would
>>>still
>>>work. That is when I realized the ground clamp was not on the cutting
>>>table.
>>>
>>>It took out the two breakout boards and the mesa THCAD-10 board.
>>>Everything else seems to have survived. I replaced one of the 
>>>breakout
>>>boards to see what all was damaged. The parallel ports are still
>>>working
>>>and the stepper drives are still working so the damage was limited.
>>>
>>>So this serves as a warning to anyone that is using a plasma CNC
>>>machine.
>>>
>>>My next question is what can I do in LinuxCNC to get a message box 
>>>each
>>>time a program is being started to check the plasma ground. This will
>>>help to mitigate this problem in the future.
>>>
>>>If there is no way to do it in LinuxCNC then I will add a piece of 
>>>code
>>>to the post processor we use in Fusion360 to add the message and a
>>>program pause in the initial preamble of the file.
>>>
>>>John T., I ordered a replacement THCAD-10 this morning. I just want 
>>>to
>>>thank you for the simple privacy statement on your website. I think 
>>>you
>>>should change your terms to be "You pay me, I ship you stuff!"
>>>
>>>Thanks and be warned!
>>>
>>>Jim C.
>>>
>>>
>>>--
>>>Mobile security can be enabling, not merely restricting. Employees 
>>>who
>>>bring their own devices (BYOD) to work are irked by the imposition of
>>>MDM
>>>restrictions. Mobile Device Manager Plus allows you to control only 
>>>the
>>>apps on BYO-devices by containerizing them, leaving personal data
>>>untouched!
>>>https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
>>>

Re: [Emc-users] Plasma Mistake

[Marius Liebenberg]

  This is the reason that I prefer a proper input filter network that 
will make sure that things stay in tact even with the earth clamp not 
connected. I have done that many times and never broke any electronics.

The circuit has a HF filter (pie) and a divider as well as a rectifier. 
Then you connect your stuff to this filter and the polarity is always 
correct and can be referenced to the circuit ground.


-- Original Message --
From: "Jim Craig" 
To: "emc-users" 
Sent: 2016-05-19 15:13:32
Subject: [Emc-users] Plasma Mistake

>So my goal is to let others learn from my mistakes. So in that way I
>tend to make a lot of them so everyone can benefit. Last night I was
>working with the plasma machine and made a big one!
>
>Don't ever forget to hook up the ground to the plasma cutter!
>
>When we hit the go button the program started. The torch found the
>material. The pilot arc started and BAM everything stopped. Realtime
>error in LinuxCNC. Cleared repowered the machine and nothing would 
>still
>work. That is when I realized the ground clamp was not on the cutting
>table.
>
>It took out the two breakout boards and the mesa THCAD-10 board.
>Everything else seems to have survived. I replaced one of the breakout
>boards to see what all was damaged. The parallel ports are still 
>working
>and the stepper drives are still working so the damage was limited.
>
>So this serves as a warning to anyone that is using a plasma CNC 
>machine.
>
>My next question is what can I do in LinuxCNC to get a message box each
>time a program is being started to check the plasma ground. This will
>help to mitigate this problem in the future.
>
>If there is no way to do it in LinuxCNC then I will add a piece of code
>to the post processor we use in Fusion360 to add the message and a
>program pause in the initial preamble of the file.
>
>John T., I ordered a replacement THCAD-10 this morning. I just want to
>thank you for the simple privacy statement on your website. I think you
>should change your terms to be "You pay me, I ship you stuff!"
>
>Thanks and be warned!
>
>Jim C.
>
>
>--
>Mobile security can be enabling, not merely restricting. Employees who
>bring their own devices (BYOD) to work are irked by the imposition of 
>MDM
>restrictions. Mobile Device Manager Plus allows you to control only the
>apps on BYO-devices by containerizing them, leaving personal data 
>untouched!
>https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
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Re: [Emc-users] CAD/CAM for LinuxCNC

[Marius Liebenberg]

Have you looked at Sheetcam. It is very good for flame and plasma and 
will not break the bank at £110-00. It is a once of cost.

-- Original Message --
From: "Bruce Layne" 
To: "Enhanced Machine Controller (EMC)" 

Sent: 2016-05-12 07:55:00
Subject: Re: [Emc-users] CAD/CAM for LinuxCNC

>2D CAD and DXF2GCODE is a powerful and fairly simple combination,
>particularly for the more inherently 2D machines such as routers,
>lasers, etc.
>
>LibreCAD was forked from QCad.  It might be easier to find LibreCAD in
>some Linux repositories.
>
>http://librecad.org/cms/home.html
>
>
>
>On 05/12/2016 12:55 AM, Kirk Wallace wrote:
>>  I don't know if it has be mentioned earlier, but qCAD and DXF2gCode 
>>can
>>  be quite handy as in a free beer sense using Linux programs. In the
>>  past, I have drawn tool paths in qCAD and have had DXF2gCode do the
>>  rest. I have noticed some activity on the DXF2gCode list recently, so
>>  there may be more features available. There may even be some 3D 
>>features.
>>
>
>
>--
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Re: [Emc-users] PCB circuit board drill file

[Marius Liebenberg]

Hi Peter
I cannot see the link to the video on you website. I would like to see 
your solder machine at work.


-- Original Message --
From: "Peter Homann" 
To: "Enhanced Machine Controller (EMC)" 

Sent: 2016-04-27 10:16:29
Subject: Re: [Emc-users] PCB circuit board drill file

>Hi,
>
>I haven't checked if its been mentioned yet but Sheetcam will take a 
>drill
>file and produce a Gcode file from it.
>http://www.sheetcam.com/features/drilling
>
>I used it here to make a PCB jig.
>http://www.homanndesigns.com/info/index.php/projects/35-smt/53-selective-soldering-machine-mach3-
>
>
>Also Sheetcam runs on Linux.
>
>Cheers,
>
>Peter
>
>On 26-Apr-16 2:56 AM, Nicklas Karlsson wrote:
>>  I am looking at using linuxcnc to drill my circuit boards. There is a 
>>few commands in file, a tool table and coordinates. It is not possible 
>>run the file directly in linuxcnc. I think this kind of file could be 
>>of general use then a pattern of holes need to be drilled. Do anyone 
>>have any suggestions on how to attack it?
>>
>>  Tool table:
>> M48
>> INCH
>> T73 ...
>> T73 ...
>> T73 ...
>> ...
>>
>>  Coordinates for each tool:
>> %
>> T73
>> X..Y..
>> X..Y..
>> X..Y..
>> ...
>> T71
>> X..Y..
>> X..Y..
>> X..Y..
>> ...
>>
>>
>>  Regards Nicklas Karlsson
>>
>>  
>>--
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[Emc-users] Gmoccapy problem after update

[Marius Liebenberg]

I just updated my production system to the latest automatic update and 
found that there are some issues that are new.


When using a touch screen on Gmoccapy and you go to load a new gcode 
file, the green "right mark" button to load the selected file does not 
come alive. You have to move the cursor or selection to another file 
with the left and right arrows on the screen before the green select 
button is active. Very frustrating new feature Nortbert




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064

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Re: [Emc-users] Changing From Mach3 to LinuxCNC questions

[Marius Liebenberg]

Your choice of Mesa cards are a good start. You can't go wrong with 
that. You will have enough IO to do all the work you want on a mill.

-- Original Message --
From: "hubert" 
To: emc-users@lists.sourceforge.net
Sent: 2016-03-29 21:06:40
Subject: [Emc-users] Changing From Mach3 to LinuxCNC questions

>I am purchasing a used CNC Mill using Stepper motors and a BLDC Spindle
>motor.  It currently is using Mach3 with a usb smooth stepper
>interface.  I found out I will either have to purchase Mach3, or as I
>prefer convert it to use LinuxCNC.  Since this is a much higher
>performance system than I currently have, I am thinking something such
>as Mesa 7I76-6I25 PNG KIT might be just the ticket to enable the
>conversion.  I would appreciate comments/suggestions.
>--
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Re: [Emc-users] Software that can mirror image G-code?

[Marius Liebenberg]

Greg
You can try Sheetcam. It can read a gcode file and then you can 
manipulate the new gcode part. Like mirror etc.

  Subject: [Emc-users] Software that can mirror image G-code?

>Is there a program, preferably for Windows, that can read a G-code file
>and make an altered copy to produce a file that will produce a mirror
>image of the original?
>
>I've done one that took quite a lot of work to get right, now I need 
>the
>code to cut the same part for the other side of the car.
>
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Re: [Emc-users] Very strange behaviour

[Marius Liebenberg]

  I did make the F and the jog speed the same but still had the the 
problem. That is why it is strange to me.

-- Original Message --
From: "TJoseph Powderly" <tjt...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-01-13 02:05:48
Subject: Re: [Emc-users] Very strange behaviour

>G0 rate faster than G1/2/3 which uses F ?
>tomp/tjtr33
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[Emc-users] Very strange behaviour

[Marius Liebenberg]

Hi All
I have a machine that I am busy doing the calibration on. I found that 
when I use a G1y2000 it would travel the full distance but if I use a 
G0y2000 it only goes 64% of the way. G0Y0 will bring it back to zero. It 
is repeatable.
Is there a setting or something that I am missing.



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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Re: [Emc-users] Very strange behaviour

[Marius Liebenberg]

I am using the same slow speed (2500mm/min) on both. I set F2500 and I 
set the jog speed at 2500 with the slider.
I am using Gmoccapy


-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2016-01-12 13:58:27
Subject: Re: [Emc-users] Very strange behaviour

>On 12 January 2016 at 11:39, Marius Liebenberg <mar...@mastercut.co.za> 
>wrote:
>
>>  I have a machine that I am busy doing the calibration on. I found 
>>that
>>  when I use a G1y2000 it would travel the full distance but if I use a
>>  G0y2000 it only goes 64% of the way. G0Y0 will bring it back to zero. 
>>It
>>  is repeatable.
>
>What happens if you turn down the rapid over-ride to G1 speeds?
>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
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Re: [Emc-users] Very strange behaviour

[Marius Liebenberg]

  Just for info sake. It was the micro stepping that was to high. Why it 
was only evident with G0 is still a mystery to me.


>It comes to mind that you might try using exact path following, G61?
>
>On 01/12/2016 04:01 AM, Marius Liebenberg wrote:
>>  I am using the same slow speed (2500mm/min) on both. I set F2500 and 
>>I
>>  set the jog speed at 2500 with the slider.
>>  I am using Gmoccapy
>>
>>
>>  -- Original Message --
>>  From: "andy pugh" <bodge...@gmail.com>
>>  To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine
>>  Controller (EMC)" <emc-users@lists.sourceforge.net>
>>  Sent: 2016-01-12 13:58:27
>>  Subject: Re: [Emc-users] Very strange behaviour
>>
>>>  On 12 January 2016 at 11:39, Marius Liebenberg 
>>><mar...@mastercut.co.za>
>>>  wrote:
>>>
>>>>I have a machine that I am busy doing the calibration on. I found
>>>>  that
>>>>when I use a G1y2000 it would travel the full distance but if I 
>>>>use a
>>>>G0y2000 it only goes 64% of the way. G0Y0 will bring it back to 
>>>>zero.
>>>>  It
>>>>is repeatable.
>>>
>>>  What happens if you turn down the rapid over-ride to G1 speeds?
>
>...
>
>--
>Kirk Wallace
>http://www.wallacecompany.com/machine_shop/
>http://www.wallacecompany.com/E45/
>
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Re: [Emc-users] Grounding Issues

[Marius Liebenberg]

John
Some things to look for.
1: Make sure that you field supply is not grounded to the same ground as 
the VFD. I.E the 24v Filed supply must be floating.
2: All cables must be screened where possible.
3: Screen must only be connected at the source and and to one single 
place to the physical earth of the box as well as the mains earth.
4: Earth must only be connected at one single point (star connection)

I had a similar problem with my lathe and found in the end that my 
spindle motor cage was not physical earth and caused huge noise.




>I have a BP knee mill with an Anilam 1100M CNC kit on it. I've removed
>all the Anilam controls a while back. I've retained the drives and 
>power
>supply and added a GS2 VFD for the spindle. I have a 5i25 7i77 setup.
>  From the get go I've had problems with the electronics on this 
>machine.
>The VFD is controlled by modbus via the gs2 component. The VFD gets
>reset to default parameters all the time from noise on the modbus. the
>5i25 get sserial errors. The sserial errors are so bad now it won't 
>even
>move an axis. The spindle works ok. The power supply is a simple bridge
>rectifier with a huge blue cap and a large power resistor across the 
>cap.
>
>Peter keeps telling me it's a grounding issue so where do I start
>looking and what do I need to do?
>
>Thanks
>JT
>
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Re: [Emc-users] Machine enable.

[Marius Liebenberg]

>There are pins to control various aspects of the e-stop and machine-on
>behaviour, spread through three areas:
>
>iocontrol.0.emc-enable-in (Bit, In) Should be driven FALSE when an
>external estop condition exists.
>iocontrol.0.user-enable-out (Bit, Out) FALSE when an internal estop
>condition exists
>iocontrol.0.user-request-enable (Bit, Out) TRUE when the user has
>requested that estop be cleared
>
>motion.enable IN BIT If this bit is driven FALSE, motion stops, the
>machine is placed in the "machine off" state, and a message is
>displayed for the operator. For normal motion, drive this bit TRUE.
>
>halui.machine.is-on bit out pin for machine is On/Off
>halui.machine.off bit in pin for setting machine Off
>halui.machine.on bit in pin for setting machine On
>
>I have only just noticed the motion.enable pin, and it might be the
>one I want, so perhaps I am answering my own question.
>
>I want to turn on the servo power supply as soon as the machine is
>taken out of e-stop, but don't want to be able to enter the "machine
>on" state until I get a power-good signal.
And maybe add an indicator on the screen somewhere to show the power 
status just so that you know what is casuing the thing not to want to 
start. I have a feeling that I used this pin a long time ago on a 
machine with a safety gate. The gate switch was connected to this pin ( 
as I recall ).
>
>
>What is the best way to achieve that? I have something similar on my
>milling machine but I have a feeling that that automatically turns the
>machine on, rather than blocking turning the machine on.
>(I ought to investigate in more detail, and with a more contrast-y
>colour scheme)
>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
>
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[Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

I have plasma machine with a X axis of 3000mm but I need to cut pipes of 
6000mm long. I have another 3000mm axis that can be fitted to the end of 
the table to make a  6000mm travel. The only this is that the axis is 
split in two. In other words I will have to have a motor to travel the 
table length and another motor to bring the head up from the end of the 
extension.
The question is now is it possible to make the two motors behave a one 
long axis with some handover in the middle?
Is this even possible and has anyone attempted this kind of silly 
arrangement?

What say ye?


-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

That will work if you always have tubes that are longer than 3000mm. If 
you need to cut shorter that half the distance then only one motor will 
move and then the scale will be broken. This is way I thought that some 
hand-off might be the answer.
Or am I not seeing the whole picture with the two steppers moving 
together but always in opposite directions?

Would this mean that the zero position will have both motors sitting in 
the middle?

-- Original Message --
From: "John Kasunich" <jmkasun...@fastmail.fm>
To: emc-users@lists.sourceforge.net
Sent: 2015-11-17 20:04:56
Subject: Re: [Emc-users] Split X axis - How to go about that?

>Instead of a hand-off you could run both axes all the time.  If you 
>command a 100mm move,
>the main axis would move 50mm and the auxiliary axis would also move 
>50mm.
>
>To do that with steppers you could simply send the same step pulses to 
>both motors (if they
>have the same steps-per-mm).  Then tell LinuxCNC that the steps-per-mm 
>is half of the
>value for each motor.
>
>Homing might be a challenge.  You would like the home switch for each 
>axis to cut off
>the step pulses for that axis, and not tell LinuxCNC that the switch 
>has been hit until
>the machine actually hits both switches.  HAL can do that if you are 
>doing software
>stepping.
>
>
>
>On Tue, Nov 17, 2015, at 12:51 PM, Marius Liebenberg wrote:
>>  That will work for servos but in my case I am using steppers. Not 
>>sure
>>  if the problem is the same. I want the axis to be spit in two and the
>>  controller must know when to use what stepper to get all the way from 
>>0
>>  to 6000mm. Somewhere in the middle there must be some sort of 
>>handover
>>  between the two steppers.
>>
>>
>>:
>>  >
>>  >>  has anyone attempted this kind of silly
>>  >>  arrangement?
>>  >
>>  
>> >https://forum.linuxcnc.org/forum/46-francais/28479-cinematique-avec-axes-redondants-presentation?limitstart=0#52533
>>  >
>>  >
>>  >--
>>  >atp
>>  >If you can't fix it, you don't own it.
>>  >http://www.ifixit.com/Manifesto
>>  
>>--
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>
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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

That will work for servos but in my case I am using steppers. Not sure 
if the problem is the same. I want the axis to be spit in two and the 
controller must know when to use what stepper to get all the way from 0 
to 6000mm. Somewhere in the middle there must be some sort of handover 
between the two steppers.


  :
>
>>  has anyone attempted this kind of silly
>>  arrangement?
>
>https://forum.linuxcnc.org/forum/46-francais/28479-cinematique-avec-axes-redondants-presentation?limitstart=0#52533
>
>
>--
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>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

-- Original Message --
From: "andy pugh" 
To: "Enhanced Machine Controller (EMC)" 


Sent: 2015-11-17 22:06:15
Subject: Re: [Emc-users] Split X axis - How to go about that?

On 17 November 2015 at 20:00, Viesturs Lācis  
wrote:



 Why not to treat the chuck motor as another joint of X axis? There
 already are 2 of them (on the gantry), so adding 3rd should be
 straightforward


That ought to work, for the first ever XYZAXX config


Living on the edge always :)


--
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If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

>A picture truly is worth 1000 words
>
>So, to cut a zero length pipe, you put the pipe chuck all the way to 
>the left and the torch carriage all the way to the right.
>
>To cut a 500mm pipe, you move the pipe chuck 250 mm to the right and 
>the torch carriage 250mm to the left from the "zero length pipe" 
>position.
>
>To cut a 6000mm pipe, you move the pipe chuck 3000mm to the right and 
>the torch carriage 3000mm to the right from the "zero length pipe" 
>position.
>
>The two carriages always move the exact same distance but in opposite 
>directions.
>
>Does that work?
>
That seems to be as I understand it then. Two configs is no problem as 
the machine will only do one at a time

>One problem would be that when running pipe work you need a different 
>machine configuration, such that when the g-code says to move 600mm, 
>LinuxCNC sends 300mm worth of steps to both axes.  When doing table 
>work and the g-code says to move 600mm, LinuxCNC sends 600mm worth of 
>steps to the table axis only.  The straightforward way is to re-start 
>LinuxCNC with a different configuration.  You might be able to do some 
>clever HAL stuff to make the switch without restarting.
>
>One question:  why not make the pipe chuck be a U axis, the torch 
>carriage is X, and let the g-code programmer have complete control of 
>what happens?  Move pipe only, torch only, or both, under g-code 
>control.


Not sure I understand how to use the U axis. I will be using the 
sheetcam rotary plugin to do the gcode. I will have to look at the usage 
of a U axis before I can decide on that.
>
>
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>   jmkasun...@fastmail.fm
>
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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

>
>>  >One question:  why not make the pipe chuck be a U axis, the torch
>>  >carriage is X, and let the g-code programmer have complete control 
>>of
>>  >what happens?  Move pipe only, torch only, or both, under g-code
>>  >control.
>>
>>
>>  Not sure I understand how to use the U axis. I will be using the
>>  sheetcam rotary plugin to do the gcode. I will have to look at the 
>>usage
>>  of a U axis before I can decide on that.
>
>If you are using CAM it probably makes sense to skip the U axis.
>If you were writing your own G-code the U axis would give you more
>flexibility, but the CAM won't understand it anyway.
>
>Just divide the steps per mm for X in half, and send the X steps to 
>both
>gantry and pipe chuck motors using HAL.  Also send X direction to both
>motors, and invert one so they travel in opposite directions.  Use HAL
>logic (in the base thread) to turn off steps to each motor when that 
>motor
>hits its home switch (only while homing), and to send a composite home
>switch signal to LinuxCNC when both motors have hit their home 
>switches.
>
>If you are generating step pulses in hardware (Mesa, Pico, or other) 
>then
>things get a little more interesting.  More like a servo system, still 
>doable
>but the approach is a little different.
>
The step generation is with software so this approach seems to be the 
thing to do.
Thanks a lot John you have been a great help. I will report back when 
the machine is running.

>
>--
>   John Kasunich
>   jmkasun...@fastmail.fm
>
>--
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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

>2015-11-17 21:54 GMT+02:00 John Kasunich :
>>  Just divide the steps per mm for X in half, and send the X steps to 
>>both
>>  gantry and pipe chuck motors using HAL.  Also send X direction to 
>>both
>>  motors, and invert one so they travel in opposite directions.  Use 
>>HAL
>>  logic (in the base thread) to turn off steps to each motor when that 
>>motor
>>  hits its home switch (only while homing), and to send a composite 
>>home
>>  switch signal to LinuxCNC when both motors have hit their home 
>>switches.
>
>Why not to treat the chuck motor as another joint of X axis? There
>already are 2 of them (on the gantry), so adding 3rd should be
>straightforward - that allows homing the chuck to its own switch
>without any additional hassle in HAL or whatever.
>
I probably dont have an idea of how that works. I am not good with 
joints mode.

>Viesturs
>
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Re: [Emc-users] Split X axis - How to go about that?

[Marius Liebenberg]

>2015-11-17 22:23 GMT+02:00 Marius Liebenberg <mar...@mastercut.co.za>:
>>>Why not to treat the chuck motor as another joint of X axis? There
>>>already are 2 of them (on the gantry), so adding 3rd should be
>>>straightforward - that allows homing the chuck to its own switch
>>>without any additional hassle in HAL or whatever.
>>>
>>  I probably dont have an idea of how that works. I am not good with
>>  joints mode.
>
>You already have 2 joints assigned to X axis on the gantry. Or am I
>missing something? So I think that adding 3d joint to the same X axis
>in HAL should be trivial.
>
No I am using trivial kinematics so there is only one joint for X axis. 
The other side is slaved. So not running in joint mode. I found that 
trivial kinematics is better for gantry systems.


>Viesturs
>
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Re: [Emc-users] 4th Axis (rotary axis)

[Marius Liebenberg]

Rick it is not a huge affair. Just specify in the ini file TYPE= ANGULAR 
for that axis

-- Original Message --
From: "Rick Lair" 
To: "Emc Users" 
Sent: 2015-11-13 16:38:43
Subject: [Emc-users] 4th Axis (rotary axis)

>Hello Guys,
>
>Does anyone know in the documentation where to get any info on setting
>up my rotary axis, I can't find any thing in the manuals on how to get
>it connected properly, without doing a bunch of excess programming.
>
>--
>
>Thanks
>
>
>Rick Lair
>Superior Roll & Turning LLC
>399 East Center Street
>Petersburg MI, 49270
>PH: 734-279-1831
>FAX: 734-279-1166
>www.superiorroll.com
>
>
>--
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Re: [Emc-users] Call an M Code from a Classic ladder output

[Marius Liebenberg]

So far I know you use a MDI_COMMAND  in the .ini file and then you 
connect that through halui.mdi-command-01

-- Original Message --
From: "Rick Lair" 
To: "Emc Users" 
Sent: 2015-11-11 15:13:57
Subject: [Emc-users] Call an M Code from a Classic ladder output

>Good Morning Gentleman,
>
>Is it possible, to call an m-code using a classicladder output?
>
>Now that I have my tool changer working, I am trying to work into my
>ladder logic the ability to call a M40, and it will put the tool that 
>is
>in the spindle back into the carousel, and then when the logic is
>finished, have classicladder call an M39.
>
>The M40 is going to "sets return-tool true", and I was going to use the
>the M39 to "sets return-tool false". Unless there is a better way to
>reset the signal without calling the M39? Really I need the M40 to 
>pulse
>the "return-tool" signal true for maybe 3-4 tenths of a second to get
>the ladder rolling, but my original train of thought is just fine.
>
>
>--
>
>Thanks
>
>
>Rick Lair
>Superior Roll & Turning LLC
>399 East Center Street
>Petersburg MI, 49270
>PH: 734-279-1831
>FAX: 734-279-1166
>www.superiorroll.com
>
>
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Re: [Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

Not for a motor but for driving a laser power source.

-- Original Message --
From: "Karlsson & Wang" <nicklas.karls...@karlssonwang.se>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-11-09 15:57:59
Subject: Re: [Emc-users] PWMGEN in PDM mode and not PWM

>Stepper motor?
>
>
>On Mon, 09 Nov 2015 12:29:12 +
>"Marius Liebenberg" <mar...@mastercut.co.za> wrote:
>
>>  Hi All
>>  I have a pwmgen setup to take the spindle command to generate a pwm
>>  signal. What I see on my scope is a PDM signal. I.E. the number of
>>  pulses increase as I increase the speed. I nee it to be PWM.
>>  I tried type=0 and type=1 when I load. Is there naother setting that
>>  does not get mentioned in "man"?
>>
>>  The reason for using another pwmgen is beacuse I have to set up 
>>manual
>>  pulses for a spesified period. Not the usual spindle operation.
>>
>>  -
>>  Regards / Groete
>>
>>  Marius D. Liebenberg
>>  +27 82 698 3251
>>  +27 12 743 6064
>>  
>>--
>>  Presto, an open source distributed SQL query engine for big data, 
>>initially
>>  developed by Facebook, enables you to easily query your data on 
>>Hadoop in a
>>  more interactive manner. Teradata is also now providing full 
>>enterprise
>>  support for Presto. Download a free open source copy now.
>>  http://pubads.g.doubleclick.net/gampad/clk?id=250295911=/4140
>>  ___
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>>  https://lists.sourceforge.net/lists/listinfo/emc-users
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Re: [Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

  I am not using Halscope but my Digital storage scope on the parport 
pin. It
>>  is predictable at all times as far as the number of pulses produced 
>>for the
>>  asked percentage of pwm. It increases to pulses for the full duration 
>>but
>>  they stay at a small width pulse. Definitely PDM mode.
>
>That's not PDM. 100% PDM is on all the time, just like PWM.
>
>What you are seeing sounds more like a stepgen. Which leads me to
>wonder if you "reset" enabled on your PWM output pin?
That could very well be as the pin was assigned to a stepper before. I 
will check.


>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
--
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developed by Facebook, enables you to easily query your data on Hadoop in a 
more interactive manner. Teradata is also now providing full enterprise
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Re: [Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>
Cc: "Enhanced Machine Controller (EMC)" 
<emc-users@lists.sourceforge.net>
Sent: 2015-11-09 15:32:19
Subject: Re: Re[2]: [Emc-users] PWMGEN in PDM mode and not PWM

>On 9 November 2015 at 13:27, Marius Liebenberg <mar...@mastercut.co.za> 
>wrote:
>
>>  I have the frequency set at 500Hz without dither. So it is reported 
>>as
>>  506.5065Hz from the halshow pins information.
>
>Is it possible that you are seeing aliasing?
>
>Which thread is halscope sampling in?
>
I am not using Halscope but my Digital storage scope on the parport pin. 
It is predictable at all times as far as the number of pulses produced 
for the asked percentage of pwm. It increases to pulses for the full 
duration but they stay at a small width pulse. Definitely PDM mode.



>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
--
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more interactive manner. Teradata is also now providing full enterprise
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Re: [Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

I dont know what we will do without Andy. Once again you are right. It 
was the reset of the parport pin that was used as s tepper driver 
before.

>On 9 November 2015 at 13:40, Marius Liebenberg <mar...@mastercut.co.za> 
>wrote:
>>  I am not using Halscope but my Digital storage scope on the parport 
>>pin. It
>>  is predictable at all times as far as the number of pulses produced 
>>for the
>>  asked percentage of pwm. It increases to pulses for the full duration 
>>but
>>  they stay at a small width pulse. Definitely PDM mode.
>
>That's not PDM. 100% PDM is on all the time, just like PWM.
>
>What you are seeing sounds more like a stepgen. Which leads me to
>wonder if you "reset" enabled on your PWM output pin?
>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
--
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developed by Facebook, enables you to easily query your data on Hadoop in a 
more interactive manner. Teradata is also now providing full enterprise
support for Presto. Download a free open source copy now.
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Re: [Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

Hi Andy
I have the frequency set at 500Hz without dither. So it is reported as 
506.5065Hz from the halshow pins information.


-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-11-09 15:15:13
Subject: Re: [Emc-users] PWMGEN in PDM mode and not PWM

>On 9 November 2015 at 12:29, Marius Liebenberg <mar...@mastercut.co.za> 
>wrote:
>
>>Is there naother setting that
>>  does not get mentioned in "man"?
>
>It is mentioned in the manpage, but you get PDM rather than PWM if you
>set the PWM base frequency to zero.
>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
--
Presto, an open source distributed SQL query engine for big data, initially
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more interactive manner. Teradata is also now providing full enterprise
support for Presto. Download a free open source copy now.
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Re: [Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

Not correct PDM is Pulse Density Modulation. Meaning that the period 
stays constant at the 1/frequency. The pulse width remains the same but 
the number of pulses per period changes. The pulse positions also remain 
static, meaning that if there are only three pulses (30% duty cycle) 
they will occur in the beginning of the period and leave the rest of the 
period void of pulses. So when you look at it with a scope you will see 
bursts of pulses at a regular interval. The number of pulses will 
increase as the command increases intil the period is fiulled up with 
pulses. So at 100% dutycycle requested you will get a pulse train that 
is continuous but at a very small PWM. Ten pulses in all per period for 
100% duty cycle.

Not what I want.



-- Original Message --
From: "Karlsson & Wang" <nicklas.karls...@karlssonwang.se>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-11-09 15:56:58
Subject: Re: [Emc-users] PWMGEN in PDM mode and not PWM

>PDM I am pretty sure should be fixed. Then number of pulses increase 
>with increasing speed it may be the encoder signal?
>
>
>
>On Mon, 09 Nov 2015 12:29:12 +
>"Marius Liebenberg" <mar...@mastercut.co.za> wrote:
>
>>  Hi All
>>  I have a pwmgen setup to take the spindle command to generate a pwm
>>  signal. What I see on my scope is a PDM signal. I.E. the number of
>>  pulses increase as I increase the speed. I nee it to be PWM.
>>  I tried type=0 and type=1 when I load. Is there naother setting that
>>  does not get mentioned in "man"?
>>
>>  The reason for using another pwmgen is beacuse I have to set up 
>>manual
>>  pulses for a spesified period. Not the usual spindle operation.
>>
>>  -
>>  Regards / Groete
>>
>>  Marius D. Liebenberg
>>  +27 82 698 3251
>>  +27 12 743 6064
>>  
>>--
>>  Presto, an open source distributed SQL query engine for big data, 
>>initially
>>  developed by Facebook, enables you to easily query your data on 
>>Hadoop in a
>>  more interactive manner. Teradata is also now providing full 
>>enterprise
>>  support for Presto. Download a free open source copy now.
>>  http://pubads.g.doubleclick.net/gampad/clk?id=250295911=/4140
>>  ___
>>  Emc-users mailing list
>>  Emc-users@lists.sourceforge.net
>>  https://lists.sourceforge.net/lists/listinfo/emc-users
--
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more interactive manner. Teradata is also now providing full enterprise
support for Presto. Download a free open source copy now.
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[Emc-users] PWMGEN in PDM mode and not PWM

[Marius Liebenberg]

Hi All
I have a pwmgen setup to take the spindle command to generate a pwm 
signal. What I see on my scope is a PDM signal. I.E. the number of 
pulses increase as I increase the speed. I nee it to be PWM.
I tried type=0 and type=1 when I load. Is there naother setting that 
does not get mentioned in "man"?

The reason for using another pwmgen is beacuse I have to set up manual 
pulses for a spesified period. Not the usual spindle operation.

-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
--
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more interactive manner. Teradata is also now providing full enterprise
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Re: [Emc-users] Mesa Ethernet products

[Marius Liebenberg]

  Obviously it was not you busy looking at the new stuff that has been 
around for a while :). All very exciting. I will be making a switch to 
Ethernet based controls soon and I dont think I will be doing LPT stuff 
after that.

I have don some configs with the 7i80 and it is really great.

-- Original Message --
From: "Belli Button" 
To: "'Enhanced Machine Controller (EMC)'" 

Sent: 2015-10-21 21:14:32
Subject: Re: [Emc-users] Mesa Ethernet products

>So
>
>I've been having a look at the Mesa website and see a few products that 
>I
>don't think existed until recently.  All Ethernet based:
>
>1. 7i92Ethernet to dual 'LPT' ports, easy retrofit for all 
>existing
>LPT based systems
>2. 7i80DB   Ethernet to four 'LPT' ports, easy retrofit for all 
>existing LPT
>based systems
>3. 7i80HD   Ethernet to 3# 50way IDC, replaces 5i23 (5i20) based 
>systems
>4. 7i76E   Ethernet to with 7i76, 5 axis stepper breakout board
>
>Has someone been busy?
>
>
>
>
>--
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Re: [Emc-users] a request

[Marius Liebenberg]

Dear Farzin,
Please follow the link at the bottom of the email and un-subscribe 
yourself from the list.

Thanks.


-- Original Message --
From: "Farzin Kamangar" 
To: "Enhanced Machine Controller (EMC)" 

Sent: 2015-10-18 14:23:34
Subject: [Emc-users] a request

>Dear Sirs,
> I would like to ask you to quit sending me any more emails. I have
>changed my
>area of interest to something other than CNC machines now. Please do 
>not
>send
>me more emails. Thanks
>Farzin Kamangar
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Re: [Emc-users] Has anyone poked around with this?

[Marius Liebenberg]

  It surely looks very promising. I will give it a try when they release 
a stable version. There are some issues to be sorted out for sure.

-- Original Message --
From: "Belli Button" 
To: "'Enhanced Machine Controller (EMC)'" 

Sent: 2015-10-14 11:46:17
Subject: [Emc-users] Has anyone poked around with this?

>http://ecam.altervista.org/
>
>Seems to have a nice lathe module.
>
>
>
>
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Re: [Emc-users] Yaskawa or not

[Marius Liebenberg]

The Servopack number is  SGDB-03VDY1 like I mentioned below
The motors are AC servos - USAGED-30V22 and USAGED-05V22K

The machine is a CNC glass cutter that has a horde of pneumatic and 
hydraulic functions. The model is an Intermac Fox 3700
I would attempot to just replace the pc and control software if I could 
lay my hands on a manual or wiring diagrams. There are several sub 
controllers or custom plc's that makes it impossible.


-- Original Message --
From: "Todd Zuercher" <zuerc...@embarqmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-09-29 18:38:49
Subject: Re: [Emc-users] Yaskawa or not

>Yaskawa has been making motors and drives for a long time, and have 
>made a lot of different kinds, using all manor of controls.  Your going 
>to have to give us more information for us to give you a 
>recommendation.
>
>But on the surface I would have to suggest, if there isn't anything 
>wrong with the motors or drives keep them.
>
>Mesa makes hardware that can work with what ever you have, but you need 
>to figure out what you have before choosing the right control hardware.
>
>Most old Dos controllers I'm familiar with are just software step 
>generators, and as such can usually be replaced by Linuxcnc with a 
>minimum of hardware (most just using a parallel port or 2).
>
>- Original Message -
>From: "Marius Liebenberg" <mar...@mastercut.co.za>
>To: "Enhanced Machine Controller (EMC)" 
><emc-users@lists.sourceforge.net>
>Sent: Tuesday, September 29, 2015 11:55:55 AM
>Subject: [Emc-users] Yaskawa or not
>
>Hi All
>I have been asked to upgrade a machine that has a very old control
>system still running on DOS. It is fitted with Yaskawa SGDB-03VDY1
>drives. I cannot seem to find reference to that extract number. There
>are two 2.9Kw motors and one 0.45Kw. They all have incremental 
>encoders.
>>From the documentation that I could find I could not see how to drive
>these things. It looks like a communications protocol that they use.
>
>I have to decide how to go about retrofitting this machine. Do I keep
>the motors (they are still very good) and keep the drives (dont know 
>how
>to drive). Does Mesa have a solution to drive these?
>Or do I dump the drives and use another set of drives? What will I use
>or,
>Do I dump the lot and start fresh. What will I use in the place of
>Yaskawa?
>
>Has anyone on the forum used these with reasonable success?
>
>I would like to go 7i80 so that I can fit an industrial panel mount pc
>with touch screen.
>
>Any thought from the wise ones?
>
>
>
>-
>Regards / Groete
>
>Marius D. Liebenberg
>+27 82 698 3251
>+27 12 743 6064
>
>
>
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>
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Re: [Emc-users] Yaskawa or not

[Marius Liebenberg]

>I replaced some 15-20 year old Yaskawa motor/drives this year.   We
>needed to get longer cables but they had used some special connectors
>that were obsolete.
>The price for the replacement cables (they were not sure they could 
>even
>get the connectors from Japan if we ordered new cable sets)  was more
>than the cost of new servo motors, drives, and cables.
>
>So we ripped out all of the Yaskawa equipment and went with all new 
>Teco
>servos and saved money.
>
>Although the motors and drives are working now, you might want to
>consider what replacing a component would cost, as eventually 
>everything
>fails.  And chances are that if you do the conversion, they will call
>you when a drive goes down in the future.

Exactly my fear. And then I cannot support the machine. I think you are 
right about replacing them. I will look at Teco and Xinje
>
>Dave
>
>On 9/29/2015 1:55 PM, Marius Liebenberg wrote:
>>  Ted
>>  The machine is 15 years old. DOS for sure. The screens look like the 
>>old
>>  pascal interface for cga screens. The new machines still have the 
>>same
>>  model number but it is not the same. The local agent does not have
>>  access to the manual as the supplier refuses to give it. They want 
>>the
>>  customer to buy a new machine. At 88000 euro against a 16.5:1 Rand, 
>>it
>>  is not funny. The machine is still fully functional and the mechanics
>>  are in pristine order but the controller keeps breaking and the
>>  manufacturer does not have spares to support it.
>>
>>  You must know when I get called in they have usually tried every 
>>other
>>  avenue. The last resort is an upgrade and the cost that that brings
>>  along.
>>
>>
>>  -- Original Message --
>>  From: "Todd Zuercher" <zuerc...@embarqmail.com>
>>  To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine
>>  Controller (EMC)" <emc-users@lists.sourceforge.net>
>>  Sent: 2015-09-29 19:48:07
>>  Subject: Re: [Emc-users] Yaskawa or not
>>
>>>  Have you tried contacting Intermac to see if they could get you some
>>>  schematics?  I think your going to want them.  Unfortunately I think
>>>  I've heard they aren't the easiest company to work with so you might 
>>>be
>>>  out of luck, but it doesn't hurt to try.
>>>
>>>  And from the pictures google brings up of "Intermac Fox 3700" 
>>>machines,
>>>  it certainly isn't a DOS based control. (Just because at has a text
>>>  based display doesn't mean it has anything to do with DOS.)  I 
>>>wouldn't
>>>  be surprised to find any one of the possible servo control options 
>>>on
>>>  that.
>>>
>>>  - Original Message -
>>>  From: "Marius Liebenberg" <mar...@mastercut.co.za>
>>>  To: "Enhanced Machine Controller (EMC)"
>>>  <emc-users@lists.sourceforge.net>
>>>  Sent: Tuesday, September 29, 2015 1:34:38 PM
>>>  Subject: Re: [Emc-users] Yaskawa or not
>>>
>>>  It looks like a pulse and dir setup from what I see on page 544. 
>>>There
>>>  is mention of speed and torque reference but it does not make sense.
>>>
>>>  -- Original Message --
>>>  From: "andy pugh" <bodge...@gmail.com>
>>>  To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine
>>>  Controller (EMC)" <emc-users@lists.sourceforge.net>
>>>  Cc: "Todd Zuercher" <zuerc...@embarqmail.com>
>>>  Sent: 2015-09-29 19:10:56
>>>  Subject: Re: [Emc-users] Yaskawa or not
>>>
>>>>  On 29 September 2015 at 17:49, Marius Liebenberg
>>>>  <mar...@mastercut.co.za> wrote:
>>>>> The Servopack number is  SGDB-03VDY1 like I mentioned below
>>>>  According to
>>>>  
>>>>http://www1.yaskawa.com/site/dmservo.nsf/link2/MNEN-5CLKHC/$file/TSE-S800-16E.pdf
>>>>
>>>>  That would be a 300W servo drive. As you have probably spotted the 
>>>>V
>>>>  and Y don't fit that manual. But the D shoiuld mean torque / speed 
>>>>or
>>>>  position control.
>>>>
>>>>  Looking at page 556 of that manual snd seeing which connectors are 
>>>>in
>>>>  use on 1CN may indicate how it is being controlled.
>>>>
>>>>  --
>>>>  atp
>>>>  If you can't fix it, you

Re: [Emc-users] Yaskawa or not

[Marius Liebenberg]

It looks like a pulse and dir setup from what I see on page 544. There 
is mention of speed and torque reference but it does not make sense.

-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Cc: "Todd Zuercher" <zuerc...@embarqmail.com>
Sent: 2015-09-29 19:10:56
Subject: Re: [Emc-users] Yaskawa or not

>On 29 September 2015 at 17:49, Marius Liebenberg 
><mar...@mastercut.co.za> wrote:
>>  The Servopack number is  SGDB-03VDY1 like I mentioned below
>
>According to 
>http://www1.yaskawa.com/site/dmservo.nsf/link2/MNEN-5CLKHC/$file/TSE-S800-16E.pdf
>
>That would be a 300W servo drive. As you have probably spotted the V
>and Y don't fit that manual. But the D shoiuld mean torque / speed or
>position control.
>
>Looking at page 556 of that manual snd seeing which connectors are in
>use on 1CN may indicate how it is being controlled.
>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
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Re: [Emc-users] Yaskawa

[Marius Liebenberg]

Nothing special that I saw. It is a rotary knife type machine with a 
driven C axis for the knife rotation. I will attempt to use the old CAM 
software. It does generate some G code that I might have to convert 
somehow.
The trick come in the pressure and cutting speed and the angle of the 
cutting tool edge. The current tool table could be used as is.


The machine has a tilting table and a heap of hydraulics that makes it 
complicated.


-- Original Message --
From: "Belli Button" <be...@iafrica.com>
To: "'Marius Liebenberg'" <mar...@mastercut.co.za>; "'Enhanced Machine 
Controller (EMC)'" <emc-users@lists.sourceforge.net>

Sent: 2015-09-29 19:18:40
Subject: RE: [Emc-users] Yaskawa

Remember that CAM for glass cutting is very special and I don't know of 
any

CAM packages that can handle glass.

It's gonna bite you're a$$.

Cheers,


-----Original Message-
From: Marius Liebenberg [mailto:mar...@mastercut.co.za]
Sent: 29 September 2015 18:49
To: Todd Zuercher; Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Yaskawa or not

The Servopack number is  SGDB-03VDY1 like I mentioned below The motors 
are

AC servos - USAGED-30V22 and USAGED-05V22K

The machine is a CNC glass cutter that has a horde of pneumatic and
hydraulic functions. The model is an Intermac Fox 3700 I would attempot 
to
just replace the pc and control software if I could lay my hands on a 
manual
or wiring diagrams. There are several sub controllers or custom plc's 
that

makes it impossible.


-- Original Message --
From: "Todd Zuercher" <zuerc...@embarqmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-09-29 18:38:49
Subject: Re: [Emc-users] Yaskawa or not


Yaskawa has been making motors and drives for a long time, and have
made a lot of different kinds, using all manor of controls.  Your 
going

to have to give us more information for us to give you a
recommendation.

But on the surface I would have to suggest, if there isn't anything
wrong with the motors or drives keep them.

Mesa makes hardware that can work with what ever you have, but you 
need
to figure out what you have before choosing the right control 
hardware.


Most old Dos controllers I'm familiar with are just software step
generators, and as such can usually be replaced by Linuxcnc with a
minimum of hardware (most just using a parallel port or 2).

- Original Message -
From: "Marius Liebenberg" <mar...@mastercut.co.za>
To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
Sent: Tuesday, September 29, 2015 11:55:55 AM
Subject: [Emc-users] Yaskawa or not

Hi All
I have been asked to upgrade a machine that has a very old control
system still running on DOS. It is fitted with Yaskawa SGDB-03VDY1
drives. I cannot seem to find reference to that extract number. There
are two 2.9Kw motors and one 0.45Kw. They all have incremental
encoders.

From the documentation that I could find I could not see how to drive

these things. It looks like a communications protocol that they use.

I have to decide how to go about retrofitting this machine. Do I keep
the motors (they are still very good) and keep the drives (dont know
how to drive). Does Mesa have a solution to drive these?
Or do I dump the drives and use another set of drives? What will I use
or, Do I dump the lot and start fresh. What will I use in the place of
Yaskawa?

Has anyone on the forum used these with reasonable success?

I would like to go 7i80 so that I can fit an industrial panel mount pc
with touch screen.

Any thought from the wise ones?



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064



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[Emc-users] Yaskawa or not

[Marius Liebenberg]

Hi All
I have been asked to upgrade a machine that has a very old control 
system still running on DOS. It is fitted with Yaskawa SGDB-03VDY1 
drives. I cannot seem to find reference to that extract number. There 
are two 2.9Kw motors and one 0.45Kw. They all have incremental encoders.
From the documentation that I could find I could not see how to drive 

these things. It looks like a communications protocol that they use.

I have to decide how to go about retrofitting this machine. Do I keep 
the motors (they are still very good) and keep the drives (dont know how 
to drive). Does Mesa have a solution to drive these?
Or do I dump the drives and use another set of drives? What will I use 
or,
Do I dump the lot and start fresh. What will I use in the place of 
Yaskawa?


Has anyone on the forum used these with reasonable success?

I would like to go 7i80 so that I can fit an industrial panel mount pc 
with touch screen.


Any thought from the wise ones?



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064


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Re: [Emc-users] Yaskawa or not

[Marius Liebenberg]

Ted
The machine is 15 years old. DOS for sure. The screens look like the old 
pascal interface for cga screens. The new machines still have the same 
model number but it is not the same. The local agent does not have 
access to the manual as the supplier refuses to give it. They want the 
customer to buy a new machine. At 88000 euro against a 16.5:1 Rand, it 
is not funny. The machine is still fully functional and the mechanics 
are in pristine order but the controller keeps breaking and the 
manufacturer does not have spares to support it.

You must know when I get called in they have usually tried every other 
avenue. The last resort is an upgrade and the cost that that brings 
along.


-- Original Message --
From: "Todd Zuercher" <zuerc...@embarqmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-09-29 19:48:07
Subject: Re: [Emc-users] Yaskawa or not

>Have you tried contacting Intermac to see if they could get you some 
>schematics?  I think your going to want them.  Unfortunately I think 
>I've heard they aren't the easiest company to work with so you might be 
>out of luck, but it doesn't hurt to try.
>
>And from the pictures google brings up of "Intermac Fox 3700" machines, 
>it certainly isn't a DOS based control. (Just because at has a text 
>based display doesn't mean it has anything to do with DOS.)  I wouldn't 
>be surprised to find any one of the possible servo control options on 
>that.
>
>- Original Message -
>From: "Marius Liebenberg" <mar...@mastercut.co.za>
>To: "Enhanced Machine Controller (EMC)" 
><emc-users@lists.sourceforge.net>
>Sent: Tuesday, September 29, 2015 1:34:38 PM
>Subject: Re: [Emc-users] Yaskawa or not
>
>It looks like a pulse and dir setup from what I see on page 544. There
>is mention of speed and torque reference but it does not make sense.
>
>-- Original Message --
>From: "andy pugh" <bodge...@gmail.com>
>To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine
>Controller (EMC)" <emc-users@lists.sourceforge.net>
>Cc: "Todd Zuercher" <zuerc...@embarqmail.com>
>Sent: 2015-09-29 19:10:56
>Subject: Re: [Emc-users] Yaskawa or not
>
>>On 29 September 2015 at 17:49, Marius Liebenberg
>><mar...@mastercut.co.za> wrote:
>>>   The Servopack number is  SGDB-03VDY1 like I mentioned below
>>
>>According to
>>http://www1.yaskawa.com/site/dmservo.nsf/link2/MNEN-5CLKHC/$file/TSE-S800-16E.pdf
>>
>>That would be a 300W servo drive. As you have probably spotted the V
>>and Y don't fit that manual. But the D shoiuld mean torque / speed or
>>position control.
>>
>>Looking at page 556 of that manual snd seeing which connectors are in
>>use on 1CN may indicate how it is being controlled.
>>
>>--
>>atp
>>If you can't fix it, you don't own it.
>>http://www.ifixit.com/Manifesto
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Re: [Emc-users] lathe G71

[Marius Liebenberg]

Rudy du Preez did some work on that. He sent me some stuff to test that 
you could look at if you wanted to.

-- Original Message --
From: "Tom Easterday" 
To: "Enhanced Machine Controller" 
Sent: 2015-09-22 01:11:08
Subject: [Emc-users] lathe G71

>Does anyone know what became of this discussion in 2012?  
>http://comments.gmane.org/gmane.linux.distributions.emc.user/39104
>
>Was there an G71 implementation done based on remapping?
>
>Thanks,
>-Tom
>
>
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[Emc-users] How far can I over clock a VFD

[Marius Liebenberg]

I have just fitted a replacement motor to my mill as the old one finally 
gave up the ghost. The motor does 1450rpm at 50Hz. The old motor was a 
1.1Kw motor and the new one is a 2.2Kw. I want to over clock the VFD to 
105Hz in order to get around 3000rpm. I have tested the motor at that 
and it seems happy in the short term.
My question is, what is the max that I can over clock the VFD / motor?



-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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Re: [Emc-users] How far can I over clock a VFD

[Marius Liebenberg]

>On 09/18/2015 04:38 AM, Marius Liebenberg wrote:
>>I have just fitted a replacement motor to my mill as the old one 
>>finally
>>gave up the ghost. The motor does 1450rpm at 50Hz. The old motor was a
>>1.1Kw motor and the new one is a 2.2Kw. I want to over clock the VFD 
>>to
>>105Hz in order to get around 3000rpm. I have tested the motor at that
>>and it seems happy in the short term.
>>My question is, what is the max that I can over clock the VFD / motor?
>>
>>
>
>I have been running a 1725 RPM at 60 HZ motor at 150Hz on my CHNC 
>Hardinge. Sometimes for days at a time.
>
>Ed.
>
That sounds very promising. That is more than double the original spec.
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Re: [Emc-users] How far can I over clock a VFD

[Marius Liebenberg]

-- Original Message --
From: "andy pugh" <bodge...@gmail.com>
To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine 
Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: 2015-09-18 13:05:15
Subject: Re: [Emc-users] How far can I over clock a VFD

>On 18 September 2015 at 10:38, Marius Liebenberg 
><mar...@mastercut.co.za> wrote:
>
>>  My question is, what is the max that I can over clock the VFD / 
>>motor?
>
>If there is a 3000 rpm version of the same motor then you can be
>confident that there is no mechanical reason that the motor can't go
>that fast.
>
>So, then you start getting into questions of stator inductance, and
>whether there is enough field current at that frequency.

I guess the best will be to test the motor under load. I mostly cut 
aluminium and plastics with the mill. It is not a decent piece of metal 
so light duty stuff only. The reason I want the extra speed is so that I 
can cut the aluminium at a better feed rate. Currently at 1100 rpm it is 
unbearable. I changed the drive pulley to be 1:1 with a slight reduction 
to the final drive pulley.

Will there be some heat build-up at free running if the field current is 
not sufficient? I could run it for a long period and check what happens, 
if that has any scientific value?


>
>--
>atp
>If you can't fix it, you don't own it.
>http://www.ifixit.com/Manifesto
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Re: [Emc-users] LinuxCNC controlling inudction heater

[Marius Liebenberg]

Hello to all!

I don't recall showing to the list how the machine works with an actual
part on it so here it is: A short video showing how it heats, quenches 
and
then goes to the next position.

https://youtu.be/xyWUCGUbUaY
Wow man now that is impressive. What is the power rating of the 
induction heater?


As always thanks for your support!


--
*Leonardo Marsaglia*.
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