Schneider Electric Modbus Plus Network Bridge Multiplexer none - Manual (Page 65)

Configuring the Modbus Models 31007492 55
2D Modbus state timer event error
2E UART interrupt error
Modbus Plus Processor Interface Error Codes: 34 ... 36 Hex
Code (Hexadecimal) Meaning
34 Modbus Plus Processor interface error
35 Modbus Plus Processor opcode response error
36 Timeout error waiting for Modbus Plus Processor
LLC Layer Error Codes: 81 ... A3 Hex
Code (Hexadecimal) Meaning
81 Master state error
82 Slave state error
83 Unknown routing failure to send
84 ... 8B Port number error
91 Privilege flag not reset
92 Port number error
A2, A3 Unknown function code