1A6  H

Number of output ON times alarm detection count setting error

Mitsubishi Electric · MELSEC iQ-R I/O Module

What does 1A6  H mean?

An invalid value has been configured for 'Number of output ON times alarm detection count setting'. The set value is outside the acceptable range of 1 to 4294967295. This prevents the system from properly monitoring and alarming on output activation counts.

Common Causes

  • Incorrect value (outside 1-4294967295) set in 'Number of output ON times alarm detection count setting'.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Set a value between 1 and 4294967295 in 'Number of output ON times alarm detection count setting'.

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Verified technical data. Last updated: March 2026

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Source: Mitsubishi Electric MELSEC iQ-R I/O Module