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Topics - Alexander the german

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General Mach Discussion / second parallel port on MACH3
« on: October 10, 2009, 02:41:25 PM »
 Hello friends! I have a problem with Mach3 and using a second parallel port. I tried to use PCI parallel port cards on my Computer for Mach 3
I tested three different Cards always with the same result. For output (out from the computer to stepper) it is working perfect.
But for inputs into the computer ( using encoder) it does not work. I build my own testing device (switches) ensuring 5V logic.
This device is working properly on the first (motherboard) parallel port. But, how described the PCI parallel port card does not react for inputs.
Has anybody an idea whats wrong. Does anybody have the same experience.
Thanks a lot, Alexander the German
 

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