Siemens WinCC Error Code W020

Siemens SCADA Major Software

Model: WinCC | Code: W020

Applicable Systems
WinCC

Symptoms

The SCADA system reports a Historian service stop. The process historian service has stopped.

Possible Causes

  • Historian service crashed from an error
  • Historian database connection lost
  • Historian service resource exhaustion

Troubleshooting Steps

  1. Step 1: Check the Historian service status
    Service is identified as stopped
  2. Step 2: Review the service error log for the stop cause
    Cause is identified
  3. Step 3: Restart the Historian service
    Service runs and archives data correctly

How to Reset

To reset: Restart the Historian service, then verify data archiving resumes.

Source: Siemens WinCC SCADA Manual, Siemens AG

Category: SCADA