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MACH TOOL BOX / Re: Parallel port configuration
« on: November 27, 2016, 01:43:59 AM »
Voltages on the various pins can be anything when Windows starts but once Mach3 starts they will be under control (assuming you have the Mach3 parallel port driver installed, enabled and the correct Port address entered).
From your measurements my guess is that your onboard LPT port is bad.
Pins 18 to 25 should all be 0 volts in relation to each other (pin 24 to 25 should not measure 4.2 volts).
PCI parallel port cards are cheap and easy to obtain, I would be inclined to try one and see if that resolves the problem.
Tweakie.
From your measurements my guess is that your onboard LPT port is bad.
Pins 18 to 25 should all be 0 volts in relation to each other (pin 24 to 25 should not measure 4.2 volts).
PCI parallel port cards are cheap and easy to obtain, I would be inclined to try one and see if that resolves the problem.
Tweakie.