| Value of bits 7...6 (decimal) | Quality | Description |
|---|---|---|
| 0 | BAD | The value is not useful for reasons indicated by the sub-status. |
| 1 | UNCERTAIN | The quality of the value is less than normal but the value may still be useful. The reason is indicated by the sub-status. |
| 2 | GOOD (non-cascade) | The quality of the value is good. |
| 3 | GOOD (cascade) | The quality of the value is good and may be used in control. |
Only sub-status codes are listed that are assigned by the IE Connector. Sub-status codes assigned by the PLC and/or periphery only are not listed but reserved to provide peripheral status codes.