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
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)
Verified technical data. Last updated: March 2026
Related Faults
Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H