step direction spindle also functions as C axis
- stevestice
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can not find -sec MOT -var MOT -num1
can not find -sec IO -var IO -num1
can not find -sec LINUXCNC -var NML_file - num1
gang_stepper.hal:173: Pin 'stepgen.3.velocity-cmd' was already linked to signal 'APOS-cmd'
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- stevestice
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gang_stepper.hal:173: Pin 'stepgen.3.velocity-cmd' was already linked to signal 'APOS-cmd'
I am puzzled by that, as it worked for me. I can't really look at it now, but you can probably comment out the "net apos-cmd" somewhere in the HAL file and see what happens.
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- stevestice
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I get a step to the spindle about every 10 seconds. but that is probably due to the net apos-cmd line being commented out. I will work on it more and let you know
what happens. THANKS for the help steve
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I get a step to the spindle about every 10 seconds. but that is probably due to the net apos-cmd line being commented out
It is possibly due to the scales being all wrong everywhere.
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with the "net apos-cmd" line, I printed the hal commands manual I hope reading it a few more times something will sink in. How can I modify the gui to show spindle rpm? THANKS Steve
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Hi I adjusted some numbers last night and things are running. Still have the spindle oscillation you talked about, will work on that more tonight. I am not good at this PID thing
In this case all you need is for the P term not to be higher than the accelleration (but as the units are arbitrary and not necessarily to an obvious timebase you can't necessarly tell by inspection)
Start with a very low P and increase it until it oscillates, then back off a bit.
You can change it "live" at the command line with "halcmd setp pid.0.Pgain 20". I suggest the command-line as there you can use tab-completion and up-arrow to bring back the command history.
The problem with Apos is that it was used by your original HAL files and I didn't properly untangle everything. Only one "signal" (Apos is a signal, a freely-chosen label) can connect to any pin and you already had Apos linked to the stepgen position.
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Just a idea-some thing i have done is print and have spiral bound all my linux cnc manuals and other manuals. I find it easier to study and find info than reading pdf's on the computer. Others may want to do this?
Thanks for the help
Steve
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currently using port 0 with 12 inputs 0-11 and 12 outputs 12-23. right now I am trying to get M8 flood coolant to output 12, when I start linux cnc I get a error that opto_ac5.0.port0.out-12 does not exist.
It is probably worth checking the pin list. Open a terminal and type
halrun
loadrt opto_ac5
show pin
And see if physical pin 12 is …out-12 or if the inputs and outputs are numbered independently.
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