NEED HELP! Sinumeik 840C. Error 43 PLC/CPU STOP?

Hi

Can somebody help me to find right path? After axle has found reference point PLC stops and gives this detailed error code.

Thanks Advance

-Pasi

HI

CAUSE

Enter the original cancellation, and then exit.
Will reload the plc.
 

 @CIRO1973--YOU ARE right , and possible error in OB20.

@PAJO---your story is too simple. is your m/c is a running good m/c? you just bought it and test it running?--why after reference this problem happen

did you try to reboot the m/c,--it may run good after re boot.

then you need S5 SW in PC online checking what is wrong with your PLC program

one possible reason is your reload (I think your lost all Data) NO GOOD PLC program back up

(ANW_PRG in HDD, was back up not in good manner) 

CIRO1973

HI

CAUSE

06  Call for a non-existent data block

Enter the original cancellation, and then exit.
Will reload the plc.