Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 118

Operation error
Error code Description
(SD0)
3400H An invalid operation (such as division by zero) is performed.
3402H Input data (INVLD, IN), output data, or operation constant (T_, Ys) is a subnormal number or NaN (not a number).
3403H An overflow has occurred.
8 CONTROL OPERATION
116
8.2 Integration (M+P_I)