Maybe I'm mentally picturing this scenario all FUBAR, but if you can manually probe it... hmmm.
Do you have an 'avoidance move' ON? Personally, am not a big fan of that option in auto-features::::::
There are cases where you can manually probe something, yet DCC will not due to the way Pcdmis treats DCC moves based on the PREHIT/RETRACT settings. Unless you use a CHECK command, Pcdmis wants to be able to go TWICE as far as the PREHIT/RETRACT values, if it can not, then it will give that error, even though you can still manually reach & measure it. SO, if you are measuring a circle whose edge is 3mm INSIDE the machine limit, you can measure it manually all day long, BUT, if your PREHIT/RETRACT is set to more than 1.5, then it will pop up that error.
There are cases where you can manually probe something, yet DCC will not due to the way Pcdmis treats DCC moves based on the PREHIT/RETRACT settings. Unless you use a CHECK command, Pcdmis wants to be able to go TWICE as far as the PREHIT/RETRACT values, if it can not, then it will give that error, even though you can still manually reach & measure it. SO, if you are measuring a circle whose edge is 3mm INSIDE the machine limit, you can measure it manually all day long, BUT, if your PREHIT/RETRACT is set to more than 1.5, then it will pop up that error.