Hi folks. I've recently acquired a Bridgeport Series 1 w/ variable speed head converted to CNC. There wasn't much documentation on anything, but it appears I have 1200 oz-in Nema 34 motors (4-wire, part # 86HS114DF05D) connected to a 4-axis blue TB6560 board. I'm running latest Mach3 v3 through a PCI card for parallel. I metered some of the pins and they seem to be putting out 3.3V. With a lot of guesswork and googling, I finally figured out that the motor output pins are :
axis step dir
x 3 2
y 5 4
z 7 6
When I start the computer the motors always lock up. When I open up Mach3 sometimes it connects and motors stay locked up and I can jog, and sometimes it doesn't and motors unlock. When it doesn't, I change Z dir pin to 1, and then only Z- works jog and none of the others work. Then I change it back to 6 and then all of a sudden all of the other motors work again.
I've been playing with the output signals to try to figure out if I need to enable anything. I believe I had it at:
enable1 port 1 pin 14
enable2 port 1 pin 2
enable3 port 1 pin 6
output1 port 1 pin 9
But I don't think this can be right because pin 2 appears to be x dir.