MESA 7i93 PWM question - motor rotation direction switch

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1 year 4 months ago #330257 by pingtomi
not with type 0, I couldn't set it but with type 1 works (I mean, logic level of the corresponding pin changes properly)
so I think there is no hardware issue.

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1 year 4 months ago - 1 year 4 months ago #330259 by PCW
Sorry I meant mode 1 (there is no mode 0)

This is pretty odd. I can't duplicate this here. I tested by putting a couple LEDs on the
PWM/DIR lines and in output mode 2 the PWM output changes from the PWM pin to
the DIR pin when the PWM value is negative. In addition, the LED brightness was proportional
to the absolute PWM value as expected.

Its especially odd since the PWM module is unchanged since it s original creation (version 0)
and PWM output mode 2 is used on some of our interface cards (7I48,7I49)

What LinuxCNC version? 


 
Last edit: 1 year 4 months ago by PCW.

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1 year 4 months ago #330260 by pingtomi
2.9.4
OK, thanks for your confirmation that this should work. I have another 7i93 in production, I'll check with that and come back with the results.

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