4th Axis rotation angle limit problem

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8 years 11 months ago #101671 by andypugh
I am away from home this weekend, and I think I need a linuxcnc machine to work this out on.

It might be best to use a limit2 HAL function on the velocity command rather than rely on the stepgen built-in limits. Then we only need to check one value for non-zero before switching to velocity mode, or out of velocity mode.

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8 years 11 months ago #101778 by eFalegname
Hi Andy
Do you have any news for me? where you able to verify on a linuxcnc pc?
thanks for sharing your knowledge
Floris

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8 years 11 months ago #101811 by andypugh
Sorry, I find myself rather over committed. To the extent that I am thinking about taking a couple of days of work to get on with all the stuff I have promised people I will do for them.

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8 years 11 months ago #101869 by andypugh
Try this:
For extra fun set the velocity stepgen accel rate really low in the iNI and see how feed is inhibited as it slows down.
The following user(s) said Thank You: eFalegname

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8 years 11 months ago - 8 years 11 months ago #101979 by eFalegname
Hi Andy, thank you so much!
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
Last edit: 8 years 11 months ago by eFalegname.

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8 years 1 month ago - 8 years 1 month ago #118112 by eFalegname
Hi Andypugh!
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

File Attachment:

File Name: custom_pos...9-28.hal
File Size:1.15 KB

File Attachment:

File Name: custom_2018-09-28.hal
File Size:3.78 KB

File Attachment:

File Name: XYZA-T_MESA.hal
File Size:7.27 KB

File Attachment:

File Name: XYZA-T_MESA.ini
File Size:7.02 KB

File Attachment:

File Name: PINOUT.txt
File Size:2.05 KB
Last edit: 8 years 1 month ago by eFalegname.

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