119XH

Output Dark Test Pulse OFF Time Range Error

Mitsubishi Electric · MELSEC iQ-R I/O Module

What does 119XH mean?

A value outside the permissible range of 0 to 2 has been configured for the 'Output dark test pulse OFF time Y' parameter, where 'Y' denotes a specific output terminal. This incorrect setting directly affects the duration of the OFF state during the output dark test for the designated output, impacting test accuracy.

Common Causes

  • The 'Output dark test pulse OFF time Y' parameter for a specific output terminal Y is set to a value less than 0.
  • The 'Output dark test pulse OFF time Y' parameter for a specific output terminal Y is set to a value greater than 2.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Set the 'Output dark test pulse OFF time Y' parameter within the valid range from 0 to 2 for the affected output terminal.

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Verified technical data. Last updated: March 2026

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