Hello,
I do not know if anybody experienced the problem I have.
The configuration is a long (2m+) machinery driven by MESA 5I23 card and connected step/dir servos.
When the machine does slow motion jog, or does homing to negative direction either on X or Y axis it cumulates following error at 0.1 unit (mm) per sec or per 2 secs.
The number is steadily increasing until following error trips resulting "following error" message or the keyboard is released, then following error number goes back to 0. It happens usually at homing or in manually initiated jog move to negative direction.
Same jog or move to positive direction never cumulates following error, number remains almost constant below 0.1 unit or so..
Machine is open loop, nothing fancy.
Direction dependency on the rate of growth of the following error looks strange for me especially as homing or slow jog is not demanding.
Other following error issue can happen at any direction.
This is at G00 or G01 speed, at slow/medium speeds, like 6000 mm/min, but can happen any random speed.
Following error slowly cumulates, then resets to 0 value. Reset happens at any random number between 0 and 1.5
Noticeable sound is audible like the gear hits the rack, most probably as result of some sort of hard travel correction.
Since the machine is open loop must be initiated by Linuxcnc.
I have some indicator bars showing following error on each axis, audible bang sounds when the following error jumps back to 0 from higher number.
Any idea to fix? Is it bug or feature? Control is 3.3 GHz old PC. Should be fast enough. Timing is loose 70000 ns on base and 100000 on servo thread.
Thanks!
Y
