Applicable Systems
TwinCAT NC
Symptoms
An invalid header was detected in a received message. The header is malformed or unsupported.
Possible Causes
- Message header does not match the expected protocol format
- Memory corruption or data structure mismatch affecting the header
Troubleshooting Steps
- Step 1: Check the calling code for correct header values
Invalid header value is identified - Step 2: Verify the data structure or protocol specification matches the expected format
Data structure matches specification
How to Reset
To reset: Correct the header value in the calling application and retry the operation.
Source: Beckhoff TwinCAT System Manual, Beckhoff Automation
Category: PLC & VFD