PLC Startup Type Scaling Failed
ABB · System
What does E2-11 mean?
The type scaling process failed during PLC startup. This is a critical error that prevents the PLC from correctly interpreting data types and ranges for I/O and internal variables. It can halt the startup process, lead to incorrect calculations, and compromise process control.
Common Causes
- Corrupted configuration file containing I/O data type definitions (e.g., GSDML file incorrect).
- Incompatible firmware version between the PLC CPU and an attached I/O module.
- Attempting to load a program with undefined or mismatched data types for I/O addresses.
- Hardware defect in the PLC's memory where type scaling information is stored.
- Power supply instability during the boot sequence causing memory corruption.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Re-download the entire PLC project (including hardware configuration) from the engineering station.
- 2
2. Verify the firmware versions of all I/O modules and the CPU against the compatibility matrix.
- 3
3. Perform a memory reset on the PLC CPU and re-initialize the hardware configuration.
- 4
4. Check for I/O module-specific diagnostic LEDs (e.g., 'DIAG' LED) that might indicate a hardware issue.
- 5
5. Review the PLC program for any custom data types that might be incorrectly defined or declared.