Modbus TCP Explicit Messaging Detected Error Codes
(Original Document)
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Modbus TCP Detected Error Codes
An event in an MBP_MSTR routine via Modbus TCP may produce one of the following detected error codes in the MBP_MSTR control block.
Modbus TCP Hexadecimal Detected Error Codes
Modbus TCP hexadecimal detected error codes include:
Code (hexadecimal)
Meaning
16#5101
No resources
16#5102
Bad IP address
16#5103
Transaction timed out
16#5104
Concurrent connections or transactions limit reached
16#5105
Remote address not allowed
16#5106
No route to host
16#5107
Remote host is down
16#5108
Connection reset by peer
16#5109
Network is down
16#5301
  • No resources available
    — or —
  • Module not ready or initializing
16#510A
Connection refused
16#510B
Connection timed out