BOOL
Operation error (hold)
The flag turns to TRUE when an operation error occurs. The flag turns to TRUE at the first occurrence of the error and remains TRUE. To set the flag to FALSE, turn off the power supply, or execute F148_ERR with n = 0.
FP7:
The number of the program block at which the operation error occurred can be evaluated using sys_iOperationErrorProgramBlockNumberHold. The number of the program step at which the operation error occurred can be evaluated using sys_diOperationErrorStepHold.
All other PLCs:
The number of the program step at which the operation error occurred can be evaluated using sys_iOperationErrorStepHold.
Step numbers of subsequent operation errors are not stored.