4th Axis rotation angle limit problem
- eFalegname
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It works like a charm... pretty awesome.
I'll post a video next week, now I have to figure out how to do the toolpaths correctly.
Cheers,
Floris
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- eFalegname
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It has been a few months since I tried this configuration successfully, even if I never used it. Now that I've decided to finally make it work, I need to convert it to adapt to a Mesa 6i25 card. I have many doubts because I don't know if the HAL mux component should work only with base-thread or with servo-thread. The most complicated point is which pins are the correct ones for the mux, since I get an error when linking the stepgens. Here I attach the configuration of my cnc router to ask you to please give it a look and advice me on how to correct the mux function. I've been trying to do it myself without success. Thanks in advance.
Floris
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- eFalegname
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Does it mean that it is necessary to address this problem in a completely different way?The stepgens in mesa hardware are built into the firmware and wired to fixed interface pins
( which pins are determined by the particular firmware used )
you do not control them at the pin level but rather by position or velocity commands
Floris
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I found this answer given by PCW about the mesa stepgen pin:
Does it mean that it is necessary to address this problem in a completely different way?The stepgens in mesa hardware are built into the firmware and wired to fixed interface pins
( which pins are determined by the particular firmware used )
you do not control them at the pin level but rather by position or velocity commands
Yes. you will need to switch between different inputs to the hm2_5i25.0.stepgen.NN.velocity-cmd pins.
Still with a mux2, probably.
I am pretty sure that it can still be made to work, but with two PIDs. One for position control and one for velocity control. This is _very_ similar to the spindle-orient problem covered in other posts to this forum.
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- wesolowskig
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One minor issue I did run into is that, if I am running in velocity mode (e.g., M100 P80) and I activate the estop, the A axis does stop turning (and all other motion stops), but subsequently bringing the machine out of estop causes the A axis to resume motion. For safety I'd like the A axis to be stopped in this case. In other words, when estop is activated, I'd like to return the A axis to position mode, as if the "M101" command had been run.
I've been reading up about estop chains, etc., but haven't been able to come up with a solution to this.
Has anyone solved this?
Thanks,
--George
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