FP2/FP2SHSelf-Diagnostic Function and Troubleshooting8 − 48.1 Self-Diagnostic Function8.1.2 Operation When an Error OccursNormally, if an error occurs, the operation stops.There are some instances in which operation continues even if an error occurs, suchas with a battery error.The user may select whether operation is to be continued or stopped if a duplicatedoutput error or operation error occurs, by setting the system registers. You can set thesystem registers for error which operation is to be continued or stopped usingprogramming tool software (NPST−GR/FPWIN GR).PLC Configuration (System register) Setting Menu of FPWIN GR Software1. On the “Option” menu, select “PLC Configuration”.2. In the [PLC Configuration] Screen, select [Action on Er-ror] tab.RegisterNo. Item Description20 DUPLICATE OUTPUT [DISE, ENAB]21 I/O UNIT ERROR [STOP, CONT]22 INTELLIGENT UNIT ERROR [STOP, CONT]23 I/O VERIFY ERROR [STOP, CONT]24 UNUSED25 UNUSED26 OPERATION ERROR [STOP, CONT]27 REMOTE I/O SLAVE LINK ERROR [STOP, CONT]28 I/O ERROR IN REMOTE I/O SLAVE [STOP, CONT]29 UNUSED4 BATTERY ERROR INDICATION [ENAB, DISA]INDEX MODIFIER CHECK [ENAB, DISA]Allowing duplicated outputWhen you set the system register 20 to “ENAB”, duplicated output is not regarded asan error and the PLC continues to operate.Continuing after an operation errorWhen you set the system register 26 to “CONT”, even if the PLC continues to operate,this is regarded as an error.This applies to system registers 21 through 28 as well.
