1A4 H
Output delay time setting error
Mitsubishi Electric · MELSEC iQ-R I/O Module
What does 1A4 H mean?
An invalid value has been configured for 'Output delay time setting'. The set value is outside the acceptable range of 1 to 150000. This incorrect setting can lead to improper output signal filtering or delayed activations.
Common Causes
- Incorrect value (outside 1-150000) set in 'Output delay time setting'.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Set a value between 1 and 150000 in 'Output delay time setting'.
Verified technical data. Last updated: March 2026
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Source: Mitsubishi Electric MELSEC iQ-R I/O Module