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ErrorLib — Industrial Fault Code Library

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F7CB

SEND Data Length Out of Range

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F7CB mean?

The specified sent data length for a SEND instruction is outside its permissible setting range. This leads to data transmission errors.

Common Causes

  • Sent data length of the SEND instruction is set to a value outside the valid range of 1 to 960 words

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Set the sent data length for the SEND instruction to a value within the range of 1 to 960 words

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

F105Initial Status with Baton/Data Link IssueF106Control/Sub-control Station Shift StatusF107Baton Pass Error (Baton Lost)
Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H
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