On Fri, 23 Jun 2017, Todd Zuercher wrote:
Date: Fri, 23 Jun 2017 13:20:26 -0400 (EDT)
From: Todd Zuercher <zuerc...@embarqmail.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] following error only while homing
That is what I've suspected but I can't figure out what I have out of place.
I did another screen shot with the position-cmd zoomed in as much as I could
and keep it on the screen.
It seems that the index enable falls, and the encoder position is reset,then
the PID gets whacked for one servo period, then the position-cmd is reset.
I have the PID index-enable pin connected, but I not sure it is actually doing
anything.
Here are my addf orders:
Yeah, those are ordered wrong so LinuxCNC's patching aound the encoder step on
index fails, but I'm not sure they can be ordered correctly with your mixed
(base/servo) thread setup. A normal servo thread only config would be
something like
addf hm2_5i25.0.read servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf pid.x_vel.do-pid-calcs servo-thread
addf pid.y_vel.do-pid-calcs servo-thread
addf pid.z_vel.do-pid-calcs servo-thread
addf pid.w_vel.do-pid-calcs servo-thread
addf sum2.0 servo-thread
addf offset.0.update-output servo-thread
addf offset.0.update-feedback servo-thread
addf mux2.0 servo-thread
addf mux2.1 servo-thread
addf pid.x_pos.do-pid-calcs servo-thread
addf pid.y_pos.do-pid-calcs servo-thread
addf pid.z_pos.do-pid-calcs servo-thread
addf pid.w_pos.do-pid-calcs servo-thread
#addf hm2_5i25.0.pet_watchdog servo-thread
addf and2.0 servo-thread
addf hm2_5i25.0.write servo-thread
----- Original Message -----
From: "Peter C. Wallace" <p...@mesanet.com>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: Friday, June 23, 2017 11:55:58 AM
Subject: Re: [Emc-users] following error only while homing
On Fri, 23 Jun 2017, Todd Zuercher wrote:
Date: Fri, 23 Jun 2017 11:21:15 -0400 (EDT)
From: Todd Zuercher <zuerc...@embarqmail.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] following error only while homing
Here are links to a halscope screen shot and log file for my servo machine that
keeps setting following errors on first try homing.
homing-error.png: https://drive.google.com/open?id=0B6U6HVQUOa1fZndtbzVRU1dpOW8
halscope-homing.log:
https://drive.google.com/open?id=0B6U6HVQUOa1fbmk5S1dKaFBoWWc
Because the scale of the position command is so huge its hard to tell whats
going on but the ferror size matches the encoder step size at index, This (and
the one cycle ferror duration) suggests that there is a thread/operation order
issue of some kind in the hal file.
Peter Wallace
Mesa Electronics
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