Y axis is making X axis stall...!!

[Jonathan]

I'm not aware of a situation where the machine is asked to move full speed in, say, the X direction whilst it's already moving full speed in the Y direction. I assumed - for no good reason - that this was a MACH3 jogging thing. So now I'm very interested in the answer.

Nothing to stop you running a program like this. It's conceivable on a drilling cycle.

G21 G61
G0 X0 Y0
G0 X100 Y100
G0 X0 Y0
G0 X100 Y100
G0 X0 Y0
G0 X100 Y100

Setup:
Motors: SY60STH88-3008BF (x3)
Driver: PM542 @ 1,600 pulses per rev, 2.37A(Peak) [1.69A(RMS)]

You and Steve are both running these motors in Bipolar series, not parallel ... interesting.

No problem, let Steve have first call then it's over to you.

Thanks :)