Falcon MONITORING F110 Manual De Usuario

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  Modbus Configuration Via Telnet

Enter Y to enable Modbus and N to disable it. When Modbus is disabled, the F110 will not 

actively listen on the Modbus TCP port for Modbus requests.

By default, the F110 listens for Modbus requests on TCP port 502. This port can be changed to 

any valid TCP port number although it is recommended to leave it set for port 502 to ensure 

compatibility with other Modbus devices on the network.

The F110 is configured by default to deny connections from any IP addresses listed in the 

Modbus IP list. When all IP addresses in this list are set to default (0.0.0.0) the F110 will deny 

connections from no devices. In other words, by default the F110 allows connections from all IP 

addresses. This can be modified if desired so that the F110 will only allow connections from IP 

addresses appearing in the IP list. Selecting “0=Allow” will only allow connections from the IP 

addresses provided in the list and deny connections from all other addresses. Selecting 

“1=Deny” will deny connections from all address in the list but accept from all other addresses.

Up to three (3) IP addresses can be specified and added to the Modbus IP list. This list can be 

used to either allow or deny connections if the IP address that the request originated from 

matches an IP address in the list. To configure IP addresses, enter each IP address when 

prompted or enter 0.0.0.0 to leave blank.

When configuration changes are complete, press 9 and Enter to save the changes and exit. The 

F110 will reboot and apply the new settings.