Troubleshooting steps
Check configuration settings, verify configuration file, reload configuration
HMI Error Codes
Allen-Bradley E21 – Configuration error
Configuration error
Details
Allen-Bradley E21 error on PanelView indicates configuration error. Invalid configuration, missing settings, configuration mismatch. Check configuration settings, verify configuration file, reload configuration.
Error typeconfiguration
MeaningConfiguration error
Typical causesInvalid configuration, missing settings, configuration mismatch
SolutionsCheck configuration settings, verify configuration file, reload configuration
SeverityMedium
Catalog references
Where this appears
Allen-BradleyE21
Utilities
Copy-paste helpers
Browse More
Explore HMI Error Codes
View all 150 hmi error codes codes
FAQ
Common questions
What does E21 mean on Allen-Bradley PanelView?
E21 on Allen-Bradley PanelView indicates configuration error. Invalid configuration, missing settings, configuration mismatch.
Community
Discussion & Experiences
Share your experience, solutions, or ask questions about this error code. Help others troubleshoot!
Loading comments...