ENCERR_INVALID_CONTROLLERTYPE
Beckhoff · TwinCAT 2 NC
What does 44A3 mean?
This error signifies that an invalid controller type has been configured or detected for an encoder. The system expects a specific type of controller for the connected encoder but found a mismatch or an undefined type. This mismatch prevents the NC from applying the correct control algorithms and parameters, rendering the encoder unusable.
Common Causes
- The controller type parameter (e.g., P1-04, Controller Type) for the encoder is configured incorrectly (e.g., set to 1 when a 2 is expected).
- Mismatch between the physically connected encoder type and the encoder controller type configured in the drive or system parameters.
- Attempting to use an unsupported encoder controller type with the current drive firmware version.
- Data corruption during parameter download, causing the encoder controller type parameter to be set to an invalid value.
- Incorrect selection from a dropdown menu in the configuration software, leading to a mismatched controller type.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Access the encoder controller type parameter (e.g., P1-04) in the drive configuration and set it to match the actual encoder and controller specifications (e.g., 1 for incremental, 2 for absolute).
- 2
2. Consult the encoder's datasheet and the drive's manual to confirm the correct numerical value for the encoder controller type.
- 3
3. Check for any available firmware updates for the drive that might introduce support for the intended encoder controller type.
- 4
4. Perform a parameter upload from the drive and then a download of the corrected parameter set to ensure data integrity.
- 5
5. Visually inspect the encoder and verify its model number to definitively determine its actual type (e.g., incremental, absolute, resolver).