Troubleshooting & Repair

Modbus Plus and SY MAX Ethernet Network Errors

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.

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 element
was active (this only applies to operations which require several cycles for
completion). Control block parameters my only be modified in inactive MSTR
components.
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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Joe Kaminski

Joe Kaminski is an industrial automation specialist at MRO Electric. He has a background in industrial engineering and supply chain management. Joe has worked in the automation industry for over 10 years providing support to some of the largest companies in the world. For more info, visit www.mroelectric.com.

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