Hi,
I have in recent days tumbled to the solution.
As smurh has pointed out it is common to use a g31 move to simulate a g1 move with a probe installed, it's to protect the probe....but a g31
that does not return a probe event is interpreted by some motion controllers, the ESS and UC100 certainly and maybe others, as a fault.
The ESS by default issues a <Cycle Stop> if that is the case and probing routines like mcProbing fail as a result.
The Probing Tab of the ESS plugin has a setting to disable the <Cycle Stop> in the event of a non-contact g31 move.
Craig