Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1315

Operation error
Error code Error content
3402H The value specified by (s1) or (s2) is a subnormal number or NaN (not a number).
3403H An overflow has occurred.
3405H Positive direction hysteresis (HS1) is less than 0 or the negative direction hysteresis (HS2) is less than 0.
11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
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