ppncconf error msg 5i25/7i77 combo
20 Dec 2013 10:40 #41855
by PCW
Replied by PCW on topic ppncconf error msg 5i25/7i77 combo
The 7I77 spindle control _must_ be on channel 5,
its the only individually settable enable.
(channels 0..4 are enabled or disabled all at once in hardware)
its the only individually settable enable.
(channels 0..4 are enabled or disabled all at once in hardware)
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20 Dec 2013 14:51 - 20 Dec 2013 14:51 #41859
by PKM
Replied by PKM on topic ppncconf error msg 5i25/7i77 combo
I understand that. But it looks like PnCConf doesn't use spinena pin and the spindle can not be tested from PnCConf.The 7I77 spindle control _must_ be on channel 5
Last edit: 20 Dec 2013 14:51 by PKM.
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20 Dec 2013 16:55 #41862
by cmorley
if you use a GPIO for enable and your spindle drive ignores the analog signal when the enable is false then you can use any channel.
It just wastes a pin.
Is there any other reason you must use channel 5?
Chris M
Replied by cmorley on topic ppncconf error msg 5i25/7i77 combo
7The 7I77 spindle control _must_ be on channel 5,
its the only individually settable enable.
(channels 0..4 are enabled or disabled all at once in hardware)
if you use a GPIO for enable and your spindle drive ignores the analog signal when the enable is false then you can use any channel.
It just wastes a pin.
Is there any other reason you must use channel 5?
Chris M
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21 Dec 2013 01:54 #41878
by PCW
Replied by PCW on topic ppncconf error msg 5i25/7i77 combo
The main issues is that it makes a logical connection between spindle-on and axis enable that you may not want.
Also the enable OPTO is more flexible than the field I/O in that it works with any voltage and can source or sink as desired (VFDs often have ground-to-enable inputs).
Since theres no disadvantage in using channel 5 for spindle control and there are disadvantages to using analogena for this (analogenea controls axis 0..4), I cant see any reason to use anything but channel 5 for spindle control on the 7I77 as it was intended. (actually we would have preferred individual enables but ran out of uProc pins)
Also the enable OPTO is more flexible than the field I/O in that it works with any voltage and can source or sink as desired (VFDs often have ground-to-enable inputs).
Since theres no disadvantage in using channel 5 for spindle control and there are disadvantages to using analogena for this (analogenea controls axis 0..4), I cant see any reason to use anything but channel 5 for spindle control on the 7I77 as it was intended. (actually we would have preferred individual enables but ran out of uProc pins)
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22 Dec 2013 13:30 #41922
by cmorley
Replied by cmorley on topic ppncconf error msg 5i25/7i77 combo
I pushed a fix for the spindle enable problem to 2.5.3 and master.
Thanks for the report.
Chris M
Thanks for the report.
Chris M
The following user(s) said Thank You: PKM
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