PDU Error Codes
| Error Code | Description | |
| 0x0000 | no error | |
| 0x0001 | there is no peripheral at given address | |
| 0x0003 | a piece of data is not available, e.g. when trying to read a bit block (with a length other than 1) or a non existing DB (200 family) | |
| 0x0005 | the data address exceeds the address range | |
| 0x0006 | can not read a bit block with a length other than 1 | |
| 0x0007 | write data size does not fit item size | |
| 0x000A | a piece of data is not available, e.g. when trying to read a non existing DB |