hi
i havve a 2 axis cnc
when i jog x and y axis the dro in mach3 shows fine...positivve an negative values however both actual axis only moves one direction
i checked voltage at direction pin going to the x and y stepper driver board and i get same voltage results at both boards 3.5v during axis move direction an .5v during opposite axis move but the axis only moves 1 direction no matter what
both stepper drivers are very old from the 1980s SLO SYN 230-T by Superior Electric
note: the slo syn 230-t manual shows 5v going to the step (pu) pin....i only get 3.5v max coming from my parallel port cable to the step and direction pin .....im wondering if since its not seeing 5v if that could be the issue....
can someone help me fix this?
thank you