Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

B–62755EN/018.TROUBLESHOOTING8.6AUTOMATICOPERATIONCANNOT BE DONEPointsCauses and Remedies1. When cycle operation isnot started (Cycle startLED does not light)G0043#7(1)Check manual operation is possible.(2)Check the status of cycle start LED on machine operator’s manual.(3)Check status of CNC.When manual operation is either impossible, perform countermeasure,based on the previous item ”Jog operation cannot be done”.Confirm that a correct mode is selected according to the mode select statusof CNC status display. Also, by confirming the automatic operationstatus it is possible to identify cycle operation, feed hold and cycle stopstate.“****” is displayed at status display on CRT.(1)Mode select signal is not correct.When the mode select signal is input correctly, following statusdisplay is done.MDI :Manual data input mode (MDI)MEM :Memory operation modeRMT :Remote operation modeIf status display does not show a correct status, check the mode signalwith following diagnosis function of PMC side (PMCDGN).#6 #5DNCI#4 #3 #2MD4#1MD2#0MD1G0007DNCI MD4 MD2 MD1 Mode select– 0 0 0 Manual data input mode0 0 0 1 Memory operation mode1 0 0 1 Remote operation mode#7(2)Cycle start signal is not inputThis signal turns 1 when cycle start button is pressed and turns 0 whenit is released. The cycle start actuates when it changes from 1 to 0.Check the state of the signal using PMC’s diagnosticfunction(PMCDGN).#6 #5 #4 #3 #2ST#1 #0G0008#2 (ST) : Cycle start signal(3)Feed hold signal is inputUnder normal state, the feed hold signal is 1 when the feed hold buttonis not pressed.Check the state of this signal using the PMC’s diagnostic function(PMCDGN) .#7#6 #5*SP#5 (*SP) : Feed hold signal#4 #3 #2 #1 #0313