Hi,
I have MACH3 setup to output #1 & #2 on pins 16 & 17 respectively, they both run through an identical transistor/relay circuit and are used for spindle and coolant control. The circuits seem to work fine and switch as requested by MACH3.
The problem is that if I use both then it messes up the Z axis, sometimes it moves very jerkily and sometimes not at all when commanded.
If I use only 1 of the M03 or M08 commands then the Z axis runs fine, it doesn't seem to matter which I run.
I don't think it is a power problem as the switching circuits only take the 5v signal to switch the relay and they seem to be switching fine.
Has anybody come across this type of problem before?
Thanks
Simon