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General Mach Discussion / Mach 3 won't talk to my PC,
« on: July 20, 2014, 04:52:32 PM »
First off, I'm very new to CNC and though I've read up on a lot of the aspects of cnc I still have a lot of applicational skills to learn.
With that said, I'm stuck still trying to get my parallel port cable to show signs of signal transmission. I set everything up according to the manual that came with the red tb6560 board that I bought from sainsmart and no movement was seen. So I killed the power and hooked up my multimeter to measure my voltage drop across the pins of the parallel port cable. I measured these pins with mach3 open and estop reset button not blinking. Here is what I read, (pin# - voltage)
1-3.3v 2-0v 3-0v 4-3.3v 5-0v 6-0v 7-0v 8-0v 9-0v 10-4v 11-4v 12-4v 13-4v 14-3.3v 15-4v 16-3.3v 17-0v 18-0v 19-0v 20-0v 21-0v 22-0v 23-0v 24-0v 25-ground
Seems to me the pin 3 should have went from 0-3.3V as I moved the x axis, but nothing. So I looked into my device manager for the port name, and the only LTP was 378 and mach had that selected already. The other port was COM1. I thought it was my board, since I've heard a lot of bad things about these drivers, but I can't even make smoke, vibrations in the motors, nothing!
The PC I'm using is a dell GX 620 with win 7 32bit os. Please help me from going crazy by measuring voltages of my parallel port pins repeatedly lol!
With that said, I'm stuck still trying to get my parallel port cable to show signs of signal transmission. I set everything up according to the manual that came with the red tb6560 board that I bought from sainsmart and no movement was seen. So I killed the power and hooked up my multimeter to measure my voltage drop across the pins of the parallel port cable. I measured these pins with mach3 open and estop reset button not blinking. Here is what I read, (pin# - voltage)
1-3.3v 2-0v 3-0v 4-3.3v 5-0v 6-0v 7-0v 8-0v 9-0v 10-4v 11-4v 12-4v 13-4v 14-3.3v 15-4v 16-3.3v 17-0v 18-0v 19-0v 20-0v 21-0v 22-0v 23-0v 24-0v 25-ground
Seems to me the pin 3 should have went from 0-3.3V as I moved the x axis, but nothing. So I looked into my device manager for the port name, and the only LTP was 378 and mach had that selected already. The other port was COM1. I thought it was my board, since I've heard a lot of bad things about these drivers, but I can't even make smoke, vibrations in the motors, nothing!
The PC I'm using is a dell GX 620 with win 7 32bit os. Please help me from going crazy by measuring voltages of my parallel port pins repeatedly lol!