F701

Designated Station Error

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F701 mean?

This error indicates a problem with the designated station for communication. It can occur if data is sent to station number 0, if a message is received that was not intended for the host, or if the designated control station is down.

Common Causes

  • Data sent to station number 0
  • Host station received a message not destined for it
  • Designated control station is non-operational (down)

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Correct the destination station number in the SEND instruction to a valid, non-zero address

  2. 2

    Verify the station number configuration of the host station to ensure it's receiving intended messages

  3. 3

    Check the operational status and power supply of the designated control station

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

Related Faults

Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H