Type 4: RAM disk (optional)
Errors of this type can occur in connection with access to the RAM disk. This includes e.g. writing, reading or deleting files (using a RAM disk is an optional extended function).
These error messages contain the following additional diagnostic data:
Data format | Element | Contains |
UNS16 | Medium | Communication medium |
UNS16 | Type | PDU code or function block type |
UNS32 | Partner | Sender |
FILE_NAME | file_name | File name |
UNS32 | file offset | File offset |
Practical examples:
- Invalid PDU code received
- Channel block marked as 'not processed'
- Incorrect content of a PDU block