Mitsubishi Electric · MELSEC Q-series MELSECNET/H
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.
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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)