Communication errors, type 3
Communication error occur whenever messages cannot be delivered, or timeouts occur. The recipient of the message is either unknown or busy.
These error messages contain the following additional diagnostic data:
Data format | Element | Contains |
|---|---|---|
UNS16 | Medium | Communication medium |
UNS16 | Typ | PDU code or function block type |
UNS32 | Partner | Sender |
Application examples:
- Invalid PDU code received
- Function block marked as 'not processed'
- Incorrect content of a PDU block