[Hurshy]

Hi I am building a CNC project. My Break out Board is the PMDX-126. I have the PMDX-134 board connected to it with Gecko G203v stepper drivers. The stepper motors are KL34H-280-45-8a. The power supply is the Antec PS-5N48. The BOB is connected to a PC (with XP) running Mach3 through a Ethernet Smooth Stepper. I have this all set up in the computer room. The basic wiring is all done. The main electrical switch powers the contactor. All of that has been sorted out. I contacted the PMDX-126 and the all the LEDS seem to be turning on/off as needed. The LED on the PMDX-134 powers on but I would think that the LEDS on the Gecko G203v should light up also but they don't. I have run a VOM over the circuit board and everywhere I think should have voltage does. I have set the Config switch settings and pushed the test button...nothing. If you can be of help I would certainly appreciate it...thanks

[Fastest1]

Do the 203's require or have an enable input? Or do they have a dip switch configuration to require it or not?

[widgitmaster]

Check the ribbon cables, the insulation-displacement connector's on the ends may not be squeezed tight enough!
Also check that they are on all the pins!