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Author Topic: Setting up spindle control does M3 and M4 change dir pin  (Read 1072 times)

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Setting up spindle control does M3 and M4 change dir pin
« on: December 19, 2018, 05:58:08 PM »
Ok new with MACH 3 and trying to connect a cnc4pc C11G Bob to my X2 mill. So I am going to setup pin 14 as the step pin per G11G manual. So I would like use the dir pin to control a relay to change direction of the motor .
My question is if I issue M3 or M4 command will one command make for pin high and one low?

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Re: Setting up spindle control does M3 and M4 change dir pin
« Reply #1 on: December 20, 2018, 02:20:43 AM »
declare your out here, and do the Setup (port/pin) for the Output.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.