Random motion and lost steps after upgrade
- Andreas.Schafferloh
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20 Oct 2016 19:40 #81901
by Andreas.Schafferloh
Replied by Andreas.Schafferloh on topic Random motion and lost steps after upgrade
Also little update from my side.
I did some tests the past days but with no results so far. Have done some fake millings for ~90 minutes with no problems and also some real millings for ~60 minutes with no problems. No changes in hardware/software or configuration. It is just strange..
However, as soon as I have something really reproduceable I keep you posted.
BTW: In case the cutter crashes again I usually press the emergency stop at the machine which also stops the program.
Are there any special logs I should then make a copy ?
Cheers
I did some tests the past days but with no results so far. Have done some fake millings for ~90 minutes with no problems and also some real millings for ~60 minutes with no problems. No changes in hardware/software or configuration. It is just strange..
However, as soon as I have something really reproduceable I keep you posted.
BTW: In case the cutter crashes again I usually press the emergency stop at the machine which also stops the program.
Are there any special logs I should then make a copy ?
Cheers
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- Andreas.Schafferloh
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13 Nov 2016 12:54 - 13 Nov 2016 13:05 #82740
by Andreas.Schafferloh
Replied by Andreas.Schafferloh on topic Random motion and lost steps after upgrade
Now it happend again but this time I saw the problem.
Did some millings with two cutters whereby in the middle I did a tool change and some tool length compensations.
For this I wrote a little sub. So during tool length measuring LinuxCNC got it's new values, ---tried to bring the cutter to a save layer--- but here only thing that happend is that the cutter went a little bit into that direction and a "tweeting" (not sure how to translate; Opossite of "bass") sound came from the z achsis. Rest is then clear; LinuxCNC thought that the cutter is at a complete different Z position and tried to move the cutter deeper and crushed into the workpiece. So far so bad.
What did I check now:
- No warnings so far about real-time problems (the little window in the down right corner at achsis...)
- Kernel is still "3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux"
- Paramters for Z-Achsis:
MAX_VELOCITY = 129.0
MAX_ACCELERATION = 1000.0
STEPGEN_MAXACCEL = 1250.0
Engines are on X/Y/Z the same. I had adjusted the velocity to 50% some time ago because I do not need that much speed here at all. Paramters should be according to machine specs.
Any ideas ?
NOTE: For the moment I adjusted the values to be at 50%. Maybe it helps... However, strange is that the problem is only with the Z-Achsis and only very seldom.
Did some millings with two cutters whereby in the middle I did a tool change and some tool length compensations.
For this I wrote a little sub. So during tool length measuring LinuxCNC got it's new values, ---tried to bring the cutter to a save layer--- but here only thing that happend is that the cutter went a little bit into that direction and a "tweeting" (not sure how to translate; Opossite of "bass") sound came from the z achsis. Rest is then clear; LinuxCNC thought that the cutter is at a complete different Z position and tried to move the cutter deeper and crushed into the workpiece. So far so bad.
What did I check now:
- No warnings so far about real-time problems (the little window in the down right corner at achsis...)
- Kernel is still "3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux"
- Paramters for Z-Achsis:
MAX_VELOCITY = 129.0
MAX_ACCELERATION = 1000.0
STEPGEN_MAXACCEL = 1250.0
Engines are on X/Y/Z the same. I had adjusted the velocity to 50% some time ago because I do not need that much speed here at all. Paramters should be according to machine specs.
Any ideas ?
NOTE: For the moment I adjusted the values to be at 50%. Maybe it helps... However, strange is that the problem is only with the Z-Achsis and only very seldom.
Last edit: 13 Nov 2016 13:05 by Andreas.Schafferloh.
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