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ErrorLib — Industrial Fault Code Library

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F7C2

Target Station Channel In Use

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F7C2 mean?

The target station's communication channel is currently in use, preventing the execution of a SEND instruction. This means the target channel is busy processing other requests.

Common Causes

  • Multiple SEND instructions are being sent to the same channel of the target station from either the host or other stations concurrently

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Retry the SEND instruction after a short interval, allowing the target channel to become free

  2. 2

    Investigate if multiple instructions from the host or other stations are simultaneously targeting the same channel on the target station and adjust timing

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
Open Manual (Page 161)Search more codes in this manual