en-938821/2 6 - 5Operational Problems66.1 Indicator "FDHLD" DisplayedFailure symptomsAny CNC condition.Indicator "FDHLD" displayed.Trouble-shootingExamine the PLCprogramme todetermine the originof the fault.Call NUMcustomer support.Refer to the manufacturer'smanual for theprocedure to follow.Display"PLC MEMORY" pageDisplay the message on page"OPERATOR MESSAGES"Display the generalfeed authorisationcondition: SPEEDSPEED = 0?YesNoNoYesIs theMSG indicatordisplayed?+ PLCI/O)0 + PLCI/O@2
