Additional fields for the MODBUS plugin

 

unit_id

Unit identifier that allows specifying a slave automaton.

Example: "255"

op

Name of the Modbus function.

ASCII character string. Example: "Write_Single_Register", etc

Operation

result

Value of the function code from the Modbus response.

Example: "5"

Result
msg

Additional information when the firewall ends a MODBUS connection

String of characters in UTF-8 format. Values: "timed out" (no response received for a sent request), "connection closed" (connection shut down by the firewall after a block alarm was raised, for example) or "no request" (the firewall did not receive a request relating to a response it has received).

Message