Re: [Emc-users] Non EMC: Advice from Cold Climates

2010-12-26 Thread Richard Arthur
HDPE suggests more recent 'history', so I would have expected the pipe to be installed below 18. I wouldn't have thought our recent conditions would have caused a problem at that depth. I'd put my money on the point of entry in to the (old?) building. Get your spade out and have a look :-) On

Re: [Emc-users] Non EMC: Advice from Cold Climates

2010-12-26 Thread Richard Arthur
HDPE suggests more recent 'history', so I would have expected the pipe to be installed below 18. I wouldn't have thought our recent conditions would have caused a problem at that depth. I'd put my money on the point of entry in to the (old?) building. Get your spade out and have a look :-) On

Re: [Emc-users] Retrofitting a manual lathe, off the wall idea? Clamp-on CNC attachment.

2010-11-17 Thread Richard Arthur
Have a look at the second video (about 3/4 of the way through): LINEAR CP-27 CNC LATHE http://www.machinetoolsupplier.com/NEW-CNC-MACHINE-TOOLS I considered the idea, but rejected it (too compromised, too expensive to build). Richard On 17/11/2010 03:22, Igor Chudov wrote: I have a Clausing

Re: [Emc-users] tuning question

2010-10-12 Thread Richard Arthur
My unqualified thoughts :-) I've seen these spikes a lot whilst tuning the servos on my mill. I think they are a characteristic of FF1 tuning. It is very tempting to tweek FF1 and watch the f-error generally tumble, only to be left with these spikes. Note from Screenshot4 that the spikes

Re: [Emc-users] Machine Lubrication via EMC

2010-07-13 Thread Richard Arthur
My KMB-1 M/X has one-shot pneumatic lube. The timer you describe fires the solenoid valve (I've never checked the exact timing) and runs when the servos are activated. The duty cycle is dictated by the profile of the cam on the timer. The oil flow rate can be controlled by the the air pressure

Re: [Emc-users] linux dual boot

2010-03-06 Thread Richard Arthur
9.10 probably installed Grub2 which has no menu.lst. (I think upgrades to 9.10 retain Grub legacy, new installs use Grub2 - quite different) There is a useful starting point here: https://help.ubuntu.com/community/Grub2 Richard Andrew wrote: On my ubuntu it's here: /boot/grub/menu.lst On

Re: [Emc-users] Multiple Servo tuning problems.

2009-12-23 Thread Richard Arthur
Dustin Monroe wrote: Ok, I messed around with a 9v battery and adjusted the reference gain and loop gain and got all three axis working without any following errors. You need to arrive at a properly tuned drive before closing the loop with EMC and any further tuning, I'm not sure that you

Re: [Emc-users] Multiple Servo tuning problems.

2009-12-22 Thread Richard Arthur
On my drives, setting the signal gain to give the required speed in relation to the input signal is the last thing to do. For my system, the object is to arrive at a table speed of 300 ft/min with an applied command of +-9V (leaving some head room). I increase the command signal in small

Re: [Emc-users] Multiple Servo tuning problems.

2009-12-21 Thread Richard Arthur
Did you tune your amplifiers to give best response to a command input prior to connecting EMC? The creep you describe can normally be reduce by tuning balance/offset (some creep is still likely until the feedback loop is closed). Richard Dustin Monroe wrote: Hello, First i will start with

Re: [Emc-users] My Karmic Koala partition seems to have been erased by LTS rtai

2009-12-03 Thread Richard Arthur
It depends how you installed Karmic. If Karmic was a clean install, then normally it should have installed grub2, if you upgraded from an earlier version normally grub legacy will be retained. I'll assume it was a clean install. One way to sort it: make a Super Grub Disc

Re: [Emc-users] ct f6900 problem

2009-11-26 Thread Richard Arthur
Sorry, I hadn't understood that graphics were failing before X was starting. I know booting in safe graphics is sometimes ignored. However I found this: https://wiki.ubuntu.com/EdgyKnownIssues/59618 I just tried it with my EMC2 8.04 disc and I am able to open the xorg.conf (so you can at least

Re: [Emc-users] Halscope interpretation

2009-11-26 Thread Richard Arthur
=10 # PID tuning params DEADBAND = 0.15 P = 20 I = 0 D = 0.1 FF0 = 0 FF1 = 0.15 FF2 =0.00045 BIAS = 0.0005 Richard Arthur wrote: Referring

Re: [Emc-users] ct f6900 problem

2009-11-26 Thread Richard Arthur
Jon Elson wrote: Chris Epicier wrote: Warning: This is a rather long message. I hope the list moderator has nothing against it. Richard Sorry, I hadn't understood that graphics were failing before X was starting. well I probably did not really stress that

Re: [Emc-users] ct f6900 problem

2009-11-25 Thread Richard Arthur
Chris Epicier wrote: Dear Jon The part that lets me stay unsatisfied is, that I cannot boot or install ubuntu past 7.10. 8.04 emc live cd boots but the screen is garbled, it finally shows an interlaced screen with the typical brown colour of the desktop and as mentioned before, If I

Re: [Emc-users] Halscope interpretation

2009-11-24 Thread Richard Arthur
Referring to: http://imagebin.org/72841 I've added the motor-pos-cmd trace. Jeff Epler wrote: The coarse-position-command is the motor position before applying screw compensation or backlash compensation, so it differs from the motor-pos-cmd on machines that have these compensations enabled.

[Emc-users] Halscope interpretation

2009-11-23 Thread Richard Arthur
Looking at a plot in halscope, I was expecting the difference between coarse-position-command and joint-pos-fb would be the same as the f-error, it appears not to be. Can you explain please? http://imagebin.org/72688 Thanks, Richard

[Emc-users] Halscope colour

2009-11-20 Thread Richard Arthur
How can I change the Halscope background from black to white (useful when printing hard copy). Thanks, Richard -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report

Re: [Emc-users] Hostmot2 homing index

2009-10-19 Thread Richard Arthur
to be set low by the motion controller when it looks for the index). Only then the driver hardware will latch on the next index, and make the pin high again, so motion knows index has happened. Regards, Alex -- From: Richard Arthur rich

Re: [Emc-users] Hostmot2 homing index

2009-10-19 Thread Richard Arthur
That resolved it. I just wish I understood it properly :-) Thank you. Richard Jeff Epler wrote: You probably need to connect the index-enable signal between the motion controller and the encoder counter: net Xindex-enable axis.0.index-enable = hm2_5i20.0.encoder.00.index-enable (this

[Emc-users] Hostmot2 homing index

2009-10-18 Thread Richard Arthur
I am moving from 2.17(working) to 2.33. I am using HM2-Servo 3 axis 5i20. Halscope: http://imagebin.org/68314 I expected homing to complete at the index (gpio 005). Homing is at level 16. I added this to the standard io block in hm2-servo.hal: # X axis limit and home newsig Xminlim-and-home

Re: [Emc-users] Soft limits m5i20

2007-08-07 Thread Richard Arthur
John Kasunich wrote: Chris Radek wrote: On Tue, Aug 07, 2007 at 06:47:59PM +0100, Richard Arthur wrote: Just playing, but I notice that reversing the sign of the Min_Limit and Max_Limit reverse the direction of travel when jogging (2.1.7). Is that expected behaviour

Re: [Emc-users] Homing with index m5i20

2007-08-04 Thread Richard Arthur
John Kasunich wrote: The scope trace shows that the the home input to the motion controller is true during the first slope - that means EMC thinks it is already on the switch, and is trying to get off of it. From the HAL file: # Connect limit/home switch outputs to motion controller.

[Emc-users] Homing with index m5i20

2007-08-03 Thread Richard Arthur
Issue: The direction of searching for the index seems to be the inverse of the direction of THE_HOME_LATCH VEL when I would have expected it to be the same. What I did: Update from (Ubuntu) 2.1.6 to 2.1.7. Generate new configs in my home folder and modify to suit. However, with the current

Re: [Emc-users] Homing with index m5i20

2007-08-03 Thread Richard Arthur
John Kasunich wrote: Richard Arthur wrote: John Kasunich wrote: Richard Arthur wrote: Issue: The direction of searching for the index seems to be the inverse of the direction of THE_HOME_LATCH VEL when I would have expected it to be the same. What I did: Update

[Emc-users] Fitting a VFD

2007-07-04 Thread Richard Arthur
I would like to fit a VFD to the spindle of my 3 axis mill. How should I set about controlling it? Apart from obvious speed control, I would like to achieve oriented stop (boring and tool changer) I am currently using an m5i20 and m7i33 under EMC 2.1.6. Thank you, Richard.

Re: [Emc-users] config file units - acceleration not using mm

2007-06-30 Thread Richard Arthur
Have a look in the User Handbook, 5.3.6, [TRAJ] Section. Regards, Richard lost wizz wrote: Hi: Am I correct in assuming that the config uses the unit inches for the acceleration and max velocity? I have the following in the ini file and it seems to work but it is not using the units

Re: [Emc-users] m5i20 Homing with index

2007-06-22 Thread Richard Arthur
Snip: I found a more disturbing problem - both versions seem to lose counts going in one direction (but not the other). I have a 2500 line encoder hooked up, so I should get 1 counts per rev. Going forward thats exactly what I get. But turning it backwards, I get between 9700 and 9800

[Emc-users] AXIS touch-off numeric keypad

2007-06-22 Thread Richard Arthur
Entering a number from the numeric keypad in to the AXIS Touch Off window does not work correctly. Keys 0, 5 and decimal point work; 1 to 4 and 6 to 9 don't. Standard number keys are fine. The numeric keypad functions correctly in other applications. Using AXIS 2.1.6, Generic 105 key UK PC

Re: [Emc-users] AXIS touch-off numeric keypad

2007-06-22 Thread Richard Arthur
John Kasunich wrote: Richard Arthur wrote: Entering a number from the numeric keypad in to the AXIS Touch Off window does not work correctly. Keys 0, 5 and decimal point work; 1 to 4 and 6 to 9 don't. Standard number keys are fine. The numeric keypad functions correctly in other

[Emc-users] m5i20 Homing with index

2007-06-21 Thread Richard Arthur
Why doesn't homing complete at the index pulse shown here: http://imagebin.org/9073 (Homing with HOME_USE_INDEX = FALSE works okay) EMC 2.1.6 From m5i20.ini: [AXIS_0] TYPE = LINEAR HOME = 0.0 MAX_VELOCITY = 4.0 MAX_ACCELERATION = 20.0 BACKLASH

Re: [Emc-users] m5i20 Homing with index

2007-06-21 Thread Richard Arthur
It is single-ended (I had assumed a change in state was all that was required). How do I invert the signal at HAL level. Would you expand a little on why that may defeat the logic in the mesa board please? Thanks Richard Jon Elson wrote: Richard Arthur wrote: Why doesn't homing complete

[Emc-users] Homing and f-error

2007-06-12 Thread Richard Arthur
I have a problem with f-error being larger than normal when homing. I ran this program : % G00 G40 G49 G80 G90 G54 G20 G61 G00 X0.2 G01 X0.1 F6. X0.2 X0.1 X0.2 X0.1 X0.2 M02 % and took a screenshot of HAL Oscilloscope to demonstrate normal f-error: http://imagebin.org/8953 This next screenshot

[Emc-users] M5i20 configuration

2007-04-06 Thread Richard Arthur
Hello, Would you be kind enough to help me with M5i20 configuration please. I am using EMC2/AXIS v2.1.3. As a first step, I am trying to manual jog. Jogging Y and Z almost immediately give 'joint following error' with no visible movement, but I have found if I set the feed rate low, I can jog

[Emc-users] Encoder pinouts

2007-03-21 Thread Richard Arthur
I am trying to determine pinouts on my Litton encoders. They have 5 wires, two for 5V supply, two giving 1000 counts per rev, one giving 1 count per rev. Can I assume then that the 1000 counts per rev are Channels A and B and the other is the index? Is there a rudimentary method to

[Emc-users] Which MESA card(s) closed loop servo

2007-03-19 Thread Richard Arthur
Hi, I would like to retro-fit EMC to my Hurco KMB1x mill. It uses 3 no. HFC servo amplifiers by Digiplan (Parker Hannifin) analogue +10V to-10V, driving brushed dc motors with tacho and encoders, opto isolators on limit switches and manual tool change. I am interested in using Mesa card(s),