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What settings work with Ohmikron PPT1006/BSD0906?
07 Apr 2011 23:31 #8688
by mpicco
What settings work with Ohmikron PPT1006/BSD0906? was created by mpicco
I have been tasked with upgrading an old MaxNC mill we use regularly. The new electronics is Ohmikron; using a BSD0906 motor driver and the PPT1006 parallel port controller.
This is also my first introduction to EMC. The old system was based upon FreeDOS.
Is there a known configuration in EMC that will work for this setup?
Thanks for any help!
Michael
This is also my first introduction to EMC. The old system was based upon FreeDOS.
Is there a known configuration in EMC that will work for this setup?
Thanks for any help!
Michael
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07 Apr 2011 23:38 #8689
by BigJohnT
Replied by BigJohnT on topic Re:What settings work with Ohmikron PPT1006/BSD0906?
I've not heard of them but surely the manufacturer gives out specs for step and direction timing. You might also peek at the stepper drive timing page on the wiki...
wiki.linuxcnc.org/cgi-bin/emcinfo.pl
John
wiki.linuxcnc.org/cgi-bin/emcinfo.pl
John
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08 Apr 2011 10:44 #8696
by andypugh
Replied by andypugh on topic Re:What settings work with Ohmikron PPT1006/BSD0906?
www.ohmikron.com/index.php
Click on source-code PPT0106 (Yes, I know you have a PPT1006, bear with me)
Looking at the source code it appears that the output is a simple step-and-direction scheme (I was worried for a while that the PPT board was a "smart" interface with onboard step generation.)
The pins seem to be hard-coded, and can either be determined from here
www.ohmikron.com/templates/static/source/setup_c.html
Or by simply running the existing software setup utility and making notes.
Assuming that they used the same driver chip on all their drives, it looks like 2uS (2000nS) step and space timing would work, but in practice you might as well start conservatively with 5000nS and reduce them if the machine appears to be slower than it used to be.
Just transfer those pin assignments to Stepconf, and it will probably all just work.
Click on source-code PPT0106 (Yes, I know you have a PPT1006, bear with me)
Looking at the source code it appears that the output is a simple step-and-direction scheme (I was worried for a while that the PPT board was a "smart" interface with onboard step generation.)
The pins seem to be hard-coded, and can either be determined from here
www.ohmikron.com/templates/static/source/setup_c.html
Or by simply running the existing software setup utility and making notes.
Assuming that they used the same driver chip on all their drives, it looks like 2uS (2000nS) step and space timing would work, but in practice you might as well start conservatively with 5000nS and reduce them if the machine appears to be slower than it used to be.
Just transfer those pin assignments to Stepconf, and it will probably all just work.
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