Messages

1

General Mach Discussion / Re: Missing steps on direction change

« on: October 16, 2015, 05:35:14 AM »

Basically it rules out electronic/mechanical problems

While I agree with "mechanical" I believe "electronic" is in no way "ruled out".  By changing to different electronics you've altered the the line impedance so the pulse shapes will be different.  You've likely changed the noise situation by having the wires not running in the same exact positions and near their same neighbors.  And likely, though I'm not sure, the actual pulses may well be different in length - which can change everything.  The driver can be flat-out missing pulses.

All this stuff has to be fairly deterministic so what is asked for you get every day.  What that means is problems can also end up being very deterministic - given all the same preambles(moves) the same errors will likely occur in the same places.

I suspect your MACH3 pulse periods are ragged-edge too short so certain pulse-trains set the drive up to reliably (deterministically) miss pulses - repeatedly.  Try increasing your pulse periods and see what happens.

By the way I loved your test setup.  I'm going to try that.

2

Third party software and hardware support forums. / Re: How to notify Mach of E-stop ?

« on: October 14, 2009, 06:05:45 AM »

Bump!

Surely someone is running an ESTOP somehow with an Galil1842?

3

Third party software and hardware support forums. / Re: How to notify Mach of E-stop ?

« on: October 08, 2009, 06:22:59 PM »

THIS is exactly the problem I am having!

pleijnen, what was your solution?

I have combed webspace and can not find the answer.

Do I have to install a parallel port?  Can I install a parallel port?  Will Mach3 accept both the Galil 1842 and parallel ports together?