Re: [Emc-users] A lot of input/output. Cheap

[Sven Wesley]

2015-09-22 22:06 GMT+02:00 Dave Cole :
>
>
> I would avoid putting the machine vertical unless you have no choice.
> The machine likely is setup for ejectors that push the molded parts out
> so they can drop down.
>
> It will also mess with your mold heat control since you will have one
> above the other.   Heat rises and you will be surprised how much the
> heat will transfer from the bottom plate to the top plate.
>
> Last, how will you change molds with one on top of the other.   With it
> vertical, now you can't drop them in with a crane/lift.
>
> Also the granule feed system for the screw is usually gravity feed.
> That would need some rework.  You will be surprised how difficult doing
> that will be.
>
> There are some good reasons why they are made in a horizontal fashion.
> You will also likely need to alter the hydraulics so the machine doesn't
> fall open or closed if it loses power.
>
> Dave
>


Guys,

I've owned this machine quite a while, I know how it works. I'm not new in
the plastics arena as I started moulding in the early 90's.
This particular machine is made for vertical moulding, I can flip it as it
is. It takes me 15 minutes to re-arrange the setup for verticals and it
runs perfect that way too. On a vertical you simply slide the moulds into
place. I prefer that instead of craning any given day. We're not talking 60
ton or above. This is a 35 ton machine so the moulds aren't really that
heavy.

A slow PC with LinuxCNC and an Arduino board is way cheaper than any PLC
ECU. If I retrofit this lump _it_will_be_ LCNC. But at the moment I am more
into ripping it up and save some of the parts for a home brew.

/S
--
Monitor Your Dynamic Infrastructure at Any Scale With Datadog!
Get real-time metrics from all of your servers, apps and tools
in one place.
SourceForge users - Click here to start your Free Trial of Datadog now!
http://pubads.g.doubleclick.net/gampad/clk?id=241902991=/4140
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Karlsson & Wang]

> I've owned this machine quite a while, I know how it works. I'm not new in
> the plastics arena as I started moulding in the early 90's.
> This particular machine is made for vertical moulding, I can flip it as it
> is. It takes me 15 minutes to re-arrange the setup for verticals and it
> runs perfect that way too. On a vertical you simply slide the moulds into
> place. I prefer that instead of craning any given day. We're not talking 60
> ton or above. This is a 35 ton machine so the moulds aren't really that
> heavy.
> 
> A slow PC with LinuxCNC and an Arduino board is way cheaper than any PLC
> ECU. If I retrofit this lump _it_will_be_ LCNC. But at the moment I am more
> into ripping it up and save some of the parts for a home brew.

I am new to linuxcnc and are just starting to get my first machine running. Are 
there any suitable user inteface for an injection molding machine? These kind 
of ordinary robot arms?

--
Monitor Your Dynamic Infrastructure at Any Scale With Datadog!
Get real-time metrics from all of your servers, apps and tools
in one place.
SourceForge users - Click here to start your Free Trial of Datadog now!
http://pubads.g.doubleclick.net/gampad/clk?id=241902991=/4140
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Dave Cole]

On 9/22/2015 3:45 AM, Sven Wesley wrote:
> 2015-09-21 9:24 GMT+02:00 alex chiosso :
>
>> Hi Sven.
>> Can you send a picture of the machine you have to retrofit ?
>> Is it an injection moulding machine ?
>> If yes how many tons is the closing clamp force and how many heating zones
>> have the injection barrel/chamber ?
>>
>> Regards.
>>
>> Alex
>>
>> Here you go.
> https://c2.staticflickr.com/6/5652/20606563013_d2a911f7e7_b.jpg
>
> It's a really nice machine, a Stübbe that has been running extremely fine
> moulds. I can even rotate the moulding line to vertical position. I am
> actually thinking of ripping the machine a part and make a new base with
> the clamps fixed in vertical position to save space.
> --

I would avoid putting the machine vertical unless you have no choice.   
The machine likely is setup for ejectors that push the molded parts out 
so they can drop down.

It will also mess with your mold heat control since you will have one 
above the other.   Heat rises and you will be surprised how much the 
heat will transfer from the bottom plate to the top plate.

Last, how will you change molds with one on top of the other.   With it 
vertical, now you can't drop them in with a crane/lift.

Also the granule feed system for the screw is usually gravity feed.   
That would need some rework.  You will be surprised how difficult doing 
that will be.

There are some good reasons why they are made in a horizontal fashion.  
You will also likely need to alter the hydraulics so the machine doesn't 
fall open or closed if it loses power.

Dave

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Sven Wesley]

2015-09-21 9:24 GMT+02:00 alex chiosso :

> Hi Sven.
> Can you send a picture of the machine you have to retrofit ?
> Is it an injection moulding machine ?
> If yes how many tons is the closing clamp force and how many heating zones
> have the injection barrel/chamber ?
>
> Regards.
>
> Alex
>
> Here you go.
https://c2.staticflickr.com/6/5652/20606563013_d2a911f7e7_b.jpg

It's a really nice machine, a Stübbe that has been running extremely fine
moulds. I can even rotate the moulding line to vertical position. I am
actually thinking of ripping the machine a part and make a new base with
the clamps fixed in vertical position to save space.
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Karlsson & Wang]

> > Hi Sven.
> > Can you send a picture of the machine you have to retrofit ?
> > Is it an injection moulding machine ?
> > If yes how many tons is the closing clamp force and how many heating zones
> > have the injection barrel/chamber ?
> >
> > Regards.
> >
> > Alex
> >
> > Here you go.
> https://c2.staticflickr.com/6/5652/20606563013_d2a911f7e7_b.jpg
> 
> It's a really nice machine, a Stübbe that has been running extremely fine
> moulds. I can even rotate the moulding line to vertical position. I am
> actually thinking of ripping the machine a part and make a new base with
> the clamps fixed in vertical position to save space.

I also have an old injection mould machine I plan to retrofit. But I also have 
other problems power supply is limited so fuses will before correct pressure is 
reached.

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[alex chiosso]

Hi Sven.
Can you send a picture of the machine you have to retrofit ?
Is it an injection moulding machine ?
If yes how many tons is the closing clamp force and how many heating zones
have the injection barrel/chamber ?

Regards.

Alex

On Tue, Sep 15, 2015 at 11:41 PM, John Thornton <j...@gnipsel.com> wrote:

> The cheapest PLC that AD sells is the Click, the software is free but
> the programming cable is $50 so  for $120 you can get 8 inputs and 6
> outputs a 7i64 is 24 outputs and 24 inputs for $198 and you don't
> need a programming cable. ClassicLadder looks mighty good when you can
> see the bits and timers in a pyvcp window.
>
> JT
>
> On 9/15/2015 8:27 AM, Ralph Stirling wrote:
> > Much as I like LinuxCNC, Mesa cards, and even Arduino's occasionally,
> > I'd go straight to AutomationDirect and get an inexpensive PLC for this
> > job.  It would already handle all the 24v I/O, have a very clean and
> complete
> > ladder logic, with good state machine methods.
> >
> > -- Ralph
> > 
> > From: Sven Wesley [svenne.d...@gmail.com]
> > Sent: Tuesday, September 15, 2015 6:12 AM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] A lot of input/output. Cheap
> >
> > 2015-09-15 14:16 GMT+02:00 andy pugh <bodge...@gmail.com>:
> >
> >> On 15 September 2015 at 13:03, Carsten Presser <c...@rstenpresser.de>
> wrote:
> >>
> >>> the big advantage of the mesa-boards is that they are well suited to
> >>> drive relays and other kinds of devices.
> >>> An Arduino or similar board only has TTL or CMOS IOs which need to get
> >>> adapted to your actual IO voltages/currents.
> >> Also, thinking about it, an Aduino Mega is no cheaper than a 7i90
> >>
> >>
> http://store.mesanet.com/index.php?route=product/product_name=7i90_id=291
> >> That has the same IO voltage problems as the Arduino, but plugs
> >> straight in to LinuxCNC (EPP Parport) and realtime HAL.
> >> http://linuxcnc.org/docs/html/man/man9/hm2_7i90.9.html
> >>
> >>
> > Don't get me wrong, I like Mesa. A Mesa board is not cheaper than a Mega.
> > You can order a clone on eBay for less
> > <
> http://www.ebay.co.uk/itm/New-ATmega2560-16AU-Improved-version-CH340G-MEGA2560-R3-Board-For-Arduino-SWTG-/231616834408?hash=item35ed706b68
> >
> > than
> > half. I have a few of those and they work as expected. There are Arduino
> > relay boards out there as well. I will get all the relays needed
> > <
> http://www.ebay.co.uk/itm/New-8-Channel-5V-Relay-Module-Board-for-Arduino-PIC-AVR-MCU-DSP-ARM-UK-/151105724470
> >
> > and the Arduino board, still for less money than one 7i90. But I prefer
> > opto isolated heavy duty solid state relays for this instead of tiny
> > mechanical relays on a small board. You should see the relay panel inside
> > the machine, the relays are like bricks...
> >
> > I think your suggestion with the HAL/Arduino library will be the cheapest
> > possible and more than good for this application, I will try it for sure!
> > With some small tweaks it will be fine for a Mega board and I should have
> > enough I/O.
> > Thanks!
> >
> > /S
> >
> --
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> >
> --
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
>
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap (Profibus)

[Karlsson & Wang]

> > > I think your suggestion with the HAL/Arduino library will be the cheapest
> > > possible and more than good for this application, I will try it for sure!
> > > With some small tweaks it will be fine for a Mega board and I should have
> > > enough I/O.
> > > Thanks!
> > >
> > > /S

Profibus have a very common protocol for a long time, sometimes there are cheap 
used IO modules available for sale and this is real professional stuff. 
Currently however there is no support for profibus in linuxcnc but I have been 
working on profibus for a short and plan to add it at soon as there is enough 
time. Hopefully it will be soon I just had to learn Chinese and spent arund 
three months on it the last year.

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap (Profibus)

[Peter Blodow]

Gentlemen,
be careful with Profibus, there are different tastes of it. Especially 
the one designed for building automation will not very well suit our 
needs. But, certainly, this is highly professional technology, extremely 
noise proof even at long distances of several hundred meters.
Peter

Am 21.09.2015 12:41, schrieb Karlsson & Wang:
 I think your suggestion with the HAL/Arduino library will be the cheapest
 possible and more than good for this application, I will try it for sure!
 With some small tweaks it will be fine for a Mega board and I should have
 enough I/O.
 Thanks!

 /S
> Profibus have a very common protocol for a long time, sometimes there are 
> cheap used IO modules available for sale and this is real professional stuff. 
> Currently however there is no support for profibus in linuxcnc but I have 
> been working on profibus for a short and plan to add it at soon as there is 
> enough time. Hopefully it will be soon I just had to learn Chinese and spent 
> arund three months on it the last year.
>
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>


---
Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft.
https://www.avast.com/antivirus


--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap (Profibus)

[Karlsson & Wang]

> Gentlemen,
> be careful with Profibus, there are different tastes of it. Especially 
> the one designed for building automation will not very well suit our 
> needs. But, certainly, this is highly professional technology, extremely 
> noise proof even at long distances of several hundred meters.
> Peter

I heard about DP and PA. I will implement the one used for Siements ET 200L-SC. 
I read somewhere about patent problems if implementing this kind of protocol 
but have also read something about an EU directive regarding software 
interoperability, anybode who know something?

Regards Nicklas Karlsson

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap (Profibus)

[Dave Cole]

I have used a lot of Profibus devices. I used to work for Siemens.
Profibus is very robust if installed properly.DP is the norm for 
remote I/O.
PA is designed for the process industry and not nearly as common.

I always thought that a chip was needed for a DP master.I don't 
think a DP master device can be made via software and standard RS485 
interface, but I could be wrong.

Dave


On 9/21/2015 11:03 AM, Karlsson & Wang wrote:
>> Gentlemen,
>> be careful with Profibus, there are different tastes of it. Especially
>> the one designed for building automation will not very well suit our
>> needs. But, certainly, this is highly professional technology, extremely
>> noise proof even at long distances of several hundred meters.
>> Peter
> I heard about DP and PA. I will implement the one used for Siements ET 
> 200L-SC. I read somewhere about patent problems if implementing this kind of 
> protocol but have also read something about an EU directive regarding 
> software interoperability, anybode who know something?
>
> Regards Nicklas Karlsson
>
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap (Profibus)

[Karlsson & Wang]

> I have used a lot of Profibus devices. I used to work for Siemens.
> Profibus is very robust if installed properly.DP is the norm for 
> remote I/O.
> PA is designed for the process industry and not nearly as common.
> 
> I always thought that a chip was needed for a DP master.I don't 
> think a DP master device can be made via software and standard RS485 
> interface, but I could be wrong.

I also read about a chip but have not found any hardware constraints, Ethecat 
for example insert information into the packet while it pass thru the device 
which put very high constraints on the timing.

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] A lot of input/output. Cheap

[Sven Wesley]

Yo!

I have this old injection moulder and the electric mayhem has degraded to a
point were I need to either throw out the machine or rebuild. The machine
is mechanically in good shape so I lean towards the latter.

There are a billion of limit switches and the hydraulic system is managed
by electric solenoids via relays and timers. I need a lot of IO-ports. I
could of course get a Mesa card but this machine has no performance goals
and an old PC with a few parallel ports should be more than fine.

What cheap solution do I have to play with?
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Dave Cole]

I do a lot of PLC programming and have used Automation Direct PLCs as 
I/O / Controllers attached to LinuxCNC via Modbus RTU.  The Click series 
of PLCs are cheap and they have relay output cards.

However if you have a lot of I/O and need auxilary control besides 
remote I/O to LinuxCNC, I think the best smaller PLC out there right now 
is the Siemens S7-1200 series.
The software is very powerful and can save a lot of development time for 
a one-off solution.   They aren't the absolute cheapest, but from a 
functionality standpoint they are superb controllers and they also 
support Modbus TCP without additional modules or software add ins.  They 
are also a lot of parts and pieces on Ebay because they are so 
popular.   Watch out for the firmware level and don't buy anything with 
firmware older than 3.0.  CPUs with firmware prior to 3.0 cannot be 
upgraded to 3.0 due to hardware changes.

Dave

On 9/15/2015 2:53 AM, Sven Wesley wrote:
> Yo!
>
> I have this old injection moulder and the electric mayhem has degraded to a
> point were I need to either throw out the machine or rebuild. The machine
> is mechanically in good shape so I lean towards the latter.
>
> There are a billion of limit switches and the hydraulic system is managed
> by electric solenoids via relays and timers. I need a lot of IO-ports. I
> could of course get a Mesa card but this machine has no performance goals
> and an old PC with a few parallel ports should be more than fine.
>
> What cheap solution do I have to play with?
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[andy pugh]

On 15 September 2015 at 07:53, Sven Wesley  wrote:

> What cheap solution do I have to play with?

What do you call "a lot" of IO? If you want more than 1000 IO lines
then I think Mesa might be best.

Do you need realtime? An Arduino Mega and Jeff's Arduino library would
work over USB.

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

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Sven Wesley]

Oh no, real time not needed. I would say there are maybe 40 switches right
now and probably 20-25 hydro valves. With some better placement and logic I
think probably half of the switches could be passed to the bin (you should
see the electric wiring...).
I can easily run the entire machine with an Arduino and relay boards. But
my plan was to use the Classic Ladder and use a GUI panel for timer
settings, showing states etc.


2015-09-15 11:26 GMT+02:00 andy pugh :

> On 15 September 2015 at 07:53, Sven Wesley  wrote:
>
> > What cheap solution do I have to play with?
>
> What do you call "a lot" of IO? If you want more than 1000 IO lines
> then I think Mesa might be best.
>
> Do you need realtime? An Arduino Mega and Jeff's Arduino library would
> work over USB.
>
> --
> atp
> If you can't fix it, you don't own it.
> http://www.ifixit.com/Manifesto
>
>
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Carsten Presser]

Hi,

the big advantage of the mesa-boards is that they are well suited to
drive relays and other kinds of devices.
An Arduino or similar board only has TTL or CMOS IOs which need to get
adapted to your actual IO voltages/currents.
Parallel Ports also need some additional protection/drivers to handle
'realworld' IO.

Depending on the actual project it might be possibe to design you own
IO-Board with appropriate IO circuits.



signature.asc
Description: OpenPGP digital signature
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[andy pugh]

On 15 September 2015 at 12:02, Sven Wesley  wrote:
> I can easily run the entire machine with an Arduino and relay boards. But
> my plan was to use the Classic Ladder and use a GUI panel for timer
> settings, showing states etc.

I was suggesting using the Arduino to HAL library. The Mega has 53 IO
lines. I don't know if the component supports the Mega.

http://emergent.unpythonic.net/01198594294

A more "interesting" solution might be to run the uspace branch on a Udoo board:
http://shop.udoo.org/eu/product/udoo-dual.html?___from_store=other=no

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

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[andy pugh]

On 15 September 2015 at 13:03, Carsten Presser  wrote:

> the big advantage of the mesa-boards is that they are well suited to
> drive relays and other kinds of devices.
> An Arduino or similar board only has TTL or CMOS IOs which need to get
> adapted to your actual IO voltages/currents.

Also, thinking about it, an Aduino Mega is no cheaper than a 7i90
http://store.mesanet.com/index.php?route=product/product_name=7i90_id=291
That has the same IO voltage problems as the Arduino, but plugs
straight in to LinuxCNC (EPP Parport) and realtime HAL.
http://linuxcnc.org/docs/html/man/man9/hm2_7i90.9.html

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

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[John Thornton]

If you need help with ClassicLadder I'm fairly good at ladder logic.

JT

On 9/15/2015 6:02 AM, Sven Wesley wrote:
> Oh no, real time not needed. I would say there are maybe 40 switches right
> now and probably 20-25 hydro valves. With some better placement and logic I
> think probably half of the switches could be passed to the bin (you should
> see the electric wiring...).
> I can easily run the entire machine with an Arduino and relay boards. But
> my plan was to use the Classic Ladder and use a GUI panel for timer
> settings, showing states etc.
>
>
>


--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[John Thornton]

The cheapest PLC that AD sells is the Click, the software is free but 
the programming cable is $50 so  for $120 you can get 8 inputs and 6 
outputs a 7i64 is 24 outputs and 24 inputs for $198 and you don't 
need a programming cable. ClassicLadder looks mighty good when you can 
see the bits and timers in a pyvcp window.

JT

On 9/15/2015 8:27 AM, Ralph Stirling wrote:
> Much as I like LinuxCNC, Mesa cards, and even Arduino's occasionally,
> I'd go straight to AutomationDirect and get an inexpensive PLC for this
> job.  It would already handle all the 24v I/O, have a very clean and complete
> ladder logic, with good state machine methods.
>
> -- Ralph
> 
> From: Sven Wesley [svenne.d...@gmail.com]
> Sent: Tuesday, September 15, 2015 6:12 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] A lot of input/output. Cheap
>
> 2015-09-15 14:16 GMT+02:00 andy pugh <bodge...@gmail.com>:
>
>> On 15 September 2015 at 13:03, Carsten Presser <c...@rstenpresser.de> wrote:
>>
>>> the big advantage of the mesa-boards is that they are well suited to
>>> drive relays and other kinds of devices.
>>> An Arduino or similar board only has TTL or CMOS IOs which need to get
>>> adapted to your actual IO voltages/currents.
>> Also, thinking about it, an Aduino Mega is no cheaper than a 7i90
>>
>> http://store.mesanet.com/index.php?route=product/product_name=7i90_id=291
>> That has the same IO voltage problems as the Arduino, but plugs
>> straight in to LinuxCNC (EPP Parport) and realtime HAL.
>> http://linuxcnc.org/docs/html/man/man9/hm2_7i90.9.html
>>
>>
> Don't get me wrong, I like Mesa. A Mesa board is not cheaper than a Mega.
> You can order a clone on eBay for less
> <http://www.ebay.co.uk/itm/New-ATmega2560-16AU-Improved-version-CH340G-MEGA2560-R3-Board-For-Arduino-SWTG-/231616834408?hash=item35ed706b68>
> than
> half. I have a few of those and they work as expected. There are Arduino
> relay boards out there as well. I will get all the relays needed
> <http://www.ebay.co.uk/itm/New-8-Channel-5V-Relay-Module-Board-for-Arduino-PIC-AVR-MCU-DSP-ARM-UK-/151105724470>
> and the Arduino board, still for less money than one 7i90. But I prefer
> opto isolated heavy duty solid state relays for this instead of tiny
> mechanical relays on a small board. You should see the relay panel inside
> the machine, the relays are like bricks...
>
> I think your suggestion with the HAL/Arduino library will be the cheapest
> possible and more than good for this application, I will try it for sure!
> With some small tweaks it will be fine for a Mega board and I should have
> enough I/O.
> Thanks!
>
> /S
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Sven Wesley]

2015-09-15 14:16 GMT+02:00 andy pugh :

> On 15 September 2015 at 13:03, Carsten Presser  wrote:
>
> > the big advantage of the mesa-boards is that they are well suited to
> > drive relays and other kinds of devices.
> > An Arduino or similar board only has TTL or CMOS IOs which need to get
> > adapted to your actual IO voltages/currents.
>
> Also, thinking about it, an Aduino Mega is no cheaper than a 7i90
>
> http://store.mesanet.com/index.php?route=product/product_name=7i90_id=291
> That has the same IO voltage problems as the Arduino, but plugs
> straight in to LinuxCNC (EPP Parport) and realtime HAL.
> http://linuxcnc.org/docs/html/man/man9/hm2_7i90.9.html
>
>
Don't get me wrong, I like Mesa. A Mesa board is not cheaper than a Mega.
You can order a clone on eBay for less

than
half. I have a few of those and they work as expected. There are Arduino
relay boards out there as well. I will get all the relays needed

and the Arduino board, still for less money than one 7i90. But I prefer
opto isolated heavy duty solid state relays for this instead of tiny
mechanical relays on a small board. You should see the relay panel inside
the machine, the relays are like bricks...

I think your suggestion with the HAL/Arduino library will be the cheapest
possible and more than good for this application, I will try it for sure!
With some small tweaks it will be fine for a Mega board and I should have
enough I/O.
Thanks!

/S
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Andrew]

2015-09-15 16:12 GMT+03:00 Sven Wesley :

> and the Arduino board, still for less money than one 7i90. But I prefer
> opto isolated heavy duty solid state relays for this instead of tiny
> mechanical relays on a small board. You should see the relay panel inside
> the machine, the relays are like bricks...
>

Here's an interesting type of multi-channel SSR
http://www.ebay.com/itm/131600696570
Not sure if 10A is enough for your machine...
-- 
Andrew
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] A lot of input/output. Cheap

[Ralph Stirling]

Much as I like LinuxCNC, Mesa cards, and even Arduino's occasionally,
I'd go straight to AutomationDirect and get an inexpensive PLC for this
job.  It would already handle all the 24v I/O, have a very clean and complete
ladder logic, with good state machine methods.

-- Ralph

From: Sven Wesley [svenne.d...@gmail.com]
Sent: Tuesday, September 15, 2015 6:12 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] A lot of input/output. Cheap

2015-09-15 14:16 GMT+02:00 andy pugh <bodge...@gmail.com>:

> On 15 September 2015 at 13:03, Carsten Presser <c...@rstenpresser.de> wrote:
>
> > the big advantage of the mesa-boards is that they are well suited to
> > drive relays and other kinds of devices.
> > An Arduino or similar board only has TTL or CMOS IOs which need to get
> > adapted to your actual IO voltages/currents.
>
> Also, thinking about it, an Aduino Mega is no cheaper than a 7i90
>
> http://store.mesanet.com/index.php?route=product/product_name=7i90_id=291
> That has the same IO voltage problems as the Arduino, but plugs
> straight in to LinuxCNC (EPP Parport) and realtime HAL.
> http://linuxcnc.org/docs/html/man/man9/hm2_7i90.9.html
>
>
Don't get me wrong, I like Mesa. A Mesa board is not cheaper than a Mega.
You can order a clone on eBay for less
<http://www.ebay.co.uk/itm/New-ATmega2560-16AU-Improved-version-CH340G-MEGA2560-R3-Board-For-Arduino-SWTG-/231616834408?hash=item35ed706b68>
than
half. I have a few of those and they work as expected. There are Arduino
relay boards out there as well. I will get all the relays needed
<http://www.ebay.co.uk/itm/New-8-Channel-5V-Relay-Module-Board-for-Arduino-PIC-AVR-MCU-DSP-ARM-UK-/151105724470>
and the Arduino board, still for less money than one 7i90. But I prefer
opto isolated heavy duty solid state relays for this instead of tiny
mechanical relays on a small board. You should see the relay panel inside
the machine, the relays are like bricks...

I think your suggestion with the HAL/Arduino library will be the cheapest
possible and more than good for this application, I will try it for sure!
With some small tweaks it will be fine for a Mega board and I should have
enough I/O.
Thanks!

/S
--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

--
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users