F703

Send Destination Group Number Error

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F703 mean?

The specified send destination group number is out of the valid range or a group number 33 or higher (control data A1H) was specified. This is a configuration error preventing group-based communication.

Common Causes

  • Send destination group number is outside the permissible range
  • Group number 33 or higher (control data A1H) was specified

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review and correct the send destination group number to be within the valid range (e.g., typically 1 to 32, as 33 or higher is explicitly incorrect)

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Verified technical data. Last updated: March 2026

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Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H