Mitsubishi Electric WDT-ERROR

Brand: Mitsubishi ElectricModel: PLC / HMI — MELSEC QError code: WDT-ERROR

What the Fault Means

Watchdog timer süresi doldu - CPU durdu

Likely causes

  • Program döngüsü çok uzun
  • Sonsuz döngü hatası
  • Sistem yükü aşırı

Solution and Safe First Checks

  1. WDT değerini artırın (SM0, SD0)
  2. Program döngü süresini optimize edin
  3. Döngü sürelerini izleyin

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.