Mitsubishi Electric 3400

Brand: Mitsubishi ElectricModel: PLC (FX5U / iQ-R / iQ-F Series)Error code: 3400

What the Fault Means

CC-Link IE Field communication error

Likely causes

  • CC-Link IE master cannot communicate with slave; cable fault; slave error

Solution and Safe First Checks

  1. Check Ethernet cable on CC-Link IE ring; check slave error LEDs; verify IP/station numbers

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Mitsubishi Electric error codes

Source: the Zeror.ai industrial fault database and Mitsubishi Electric technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.

Mitsubishi Electric 3400 · Zeror.ai