SY/MAX Ethernet transaction function error codes for Modbus Plus appear as Mmss, where M is the high code, m is the low code, and ss is the subcode. Read below for information regarding possible Schneider Module Modbus Plus and SY MAX Ethernet Network Errors.
| Hex. Error Code | Description |
|---|---|
| 1001 | Abort by user |
| 2001 | An operation type that is not supported has been specified in the control block |
| 2002 | One or more control block parameters were modified while the MSTR elementwas active (this only applies to operations which require several cycles for completion). Control block parameters my only be modified in inactive MSTRcomponents. |
| 2003 | Invalid value in the length field of the control block |
| 2004 | Invalid value in the offset field of the control block |
| 2005 | Invalid value in the length and offset fields of the control block |
| 2006 | Unauthorized data field on slave |
| 2007 | Unauthorized network field on slave |
| 2008 | Unauthorized network routing path on slave |
| 2009 | Routing path equivalent to their own address |
| 200A | Attempt to get more global data words than available |
| 200C | Bad pattern for change address request |
| 200D | Bad address for change address request |
| 200E | The control block is not assigned, or parts of the control block are located outside of the %MW (4x) range. |
| 30ss | Exceptional response by Modbus slave |
| 4001 | Inconsistent response by Modbus slave |
| 5001 | Inconsistent response by the network |
| 6007 | Invalid slot ID |
| 6mss | Routing path error The subfield m shows where the error occurred (a 0 value means local node, 2 means 2nd device in route, etc). |
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