Ive finally set up my machine and ill is running ok apart from the pesky limit switches. ive wired them up in a continuos loop for x+- y +- and z+ but for some odd reason as soon as a enable my servo drives mach flashes up limit switch has been triggered.

the only thing i can think of what is doing this is electrical interference of some sort. but im unsure how to cure it.

How i have me setup is like this.. PC - Smoothstepper - C10 BOB - Drives, now if i wire the drives direct to the smoothstepper board with the C23 terminal board for some reason i cannot get my switches to work with mach3.

I enable the drive by a separate 12v supply on a independent switch so it has no physical contact with the C10 BOB.

The servo drives do generate a fair bit of electrical squeal when run is enabled. so my thoughts are interference of some sort.

Anyone have any other thoughts?

Cheers