Mitsubishi FR-A800 Error Code E.USB

Mitsubishi PLC & VFD Minor Communication

Model: FR-A800 | Code: E.USB

Applicable Systems
MELSEC FX3U MELSEC FX5U FR-A800 FR-A700 MR-J4 iQ-R Motion Controller (R32MTCPU/R16MTCPU)

Symptoms

USB communication error detected.

Possible Causes

  • USB cable disconnected
  • USB driver error
  • USB port fault

Troubleshooting Steps

  1. Step 1: Check USB cable connection
    Cable securely connected
  2. Step 2: Verify USB driver
    Driver installed correctly
  3. Step 3: Try different USB port
    Port functional

How to Reset

Reset by reconnecting USB or power cycle.

Related Mitsubishi Fault Codes

Source: Mitsubishi FR-A800 Instruction Manual, Mitsubishi Electric

Category: PLC & VFD