MA 500 STOPPING AFTER B ROTATION

[mopar]

HELP . MA 500 STOPPING AFTER A TOOL CHANGE WITH A B ROTAION.
NO ALARMS , NO CODES ,JUST STOPPING, LIKE YOU HIT SLIDE HOLD .
SOMETIMES IT STOPS IN THE MIDDLE OF A TOOLPATH THAT HAS A B ROTAION WITH A Z PLANE

[broby]

Is there anything coming up on the Diagnostics screen at all?

[mopar]

no codes and alarms
just stops like the feed hold has been pressed