- Configuring LinuxCNC
- Advanced Configuration
- Servo Wiring and Tuning detailed How To example Mesa 7i77.
Servo Wiring and Tuning detailed How To example Mesa 7i77.
- rodw
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- Type_Zero_Design
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- tommylight
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- tommylight
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Is it working now with no dyslexia ?Ha! Rod you had me wondering there for a second, I was like darn I didn't even see sliders on the left! No wonder it wasn't working!

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- Type_Zero_Design
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I don't see that crazy movements describe seeing in Hal Scope., but what I do see applies sharper the line that off the screen that fat then a second later actress back in the screen in a large arc goes back to normal.
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I got it working and was able to move this at signals actually see what's happening.
I don't see that crazy movements describe seeing in Hal Scope., but what I do see applies sharper the line that off the screen that fat then a second later actress back in the screen in a large arc goes back to normal.
LMAO I think I was half asleep when I wrote this.
Sorry for that garbled mess..
So what I was trying to say is I was able to get everything situated in Hal Scope and see the signals but when comanding the short jogs as you described I was not seeing the signals jump all over out of control. Instead what I would see is the signal would spike up vertically in a straight line off the screen the about a second later it would drift back in the screen and in line with the other line in a giant sweeping arc.
I did play some "I" and that did make a change and eliminate the giant spike, but then the signal never came back in line and seemed to just chase itself producing a endless sine wave.
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- PCW
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1. Don't use any I or D only P and FF1
2. Make sure you remove all the PID maxerror lines in the hal file
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I will check into the maxerror lines.
I should have mentioned that I started with P and some ff1 but I wasn't getting any visible change as I think the error was so large. I got nervous to be making large changes. Is there a safe range to work in or is it all just case by case.
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- PCW
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You can either calculate FF1 (10/velocity@10V) or scale the analog output
in velocity in which case FF1 = 1.0
An initial P value of 1 is probably OK
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- tommylight
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If you dont have the maxerror lines removed, you will no be able to tune
You can either calculate FF1 (10/velocity@10V) or scale the analog output
in velocity in which case FF1 = 1.0
An initial P value of 1 is probably OK
Added this info to the original post.
Thank you, PCW.
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- Configuring LinuxCNC
- Advanced Configuration
- Servo Wiring and Tuning detailed How To example Mesa 7i77.