[Kent23]

I am runnign Mach 4. Take this simple routine that is assigned to a button:

inst = mc.mcGetInstance()
mc.mcCntlGcodeExecuteWait(inst,'G90 G00 G53 Z0.0')

This works fine but if I hit a soft limit with the Y-Axis, it will not perform this move unless I restart Mach or open and close the screen editor. This is true even if I back off of the y-soft limit. Any ideas what is going on here?

[cncmakers001]

Use mc.mcCntlGcodeExecute() Instead

Sometimes, using mcCntlGcodeExecute() (non-blocking) followed by a wait loop for the interpreter to finish can work around interpreter lockups:

mc.mcCntlGcodeExecute(inst, 'G90 G00 G53 Z0.0')
repeat
local state = mc.mcCntlIsInCycle(inst)
until state == 0

[Kent23]

I worked around this by issuing a command to move the x-axis away from the soft limit by 0.001". I am guessing there is a bug in the Mach code such that it is using a check for "less than" when it should be "less than or equal to". Just a guess.