1436LE008146B
Communication functions
9.2 Modbus communication
The Modbus TCP communication module has one RJ45 socket on the left product side.
The Modbus-TCP communication module includes a secure web server (HTTPS) enabling
configuration of the IP parameters (static or dynamic configuration), time synchronisation
mode and TLS security for the web servers and Modbus TCP/IP servers.
The Modbus TCP/IP protocol can be configured to function without security (default mode) or
secured via Modbus TLS.
TLS security allows a Modbus communication tunnel to be established, significantly reducing
the risks of intrusion in the context of cybersecurity measures.
1
2
MODBUS TCP Default value Description
DHCP O
O: the IP address must be configured manually (static).
On: the IP address is assigned automatically by the internet network
(dynamic).
IP ADDRESS 172.16.1.1
Enter the unique and fixed IP address corresponding to the network
parameter.
SUBNET MASK 255.255.255.0
Enter the subnet mask.
GATEWAY 0.0.0.0
Enter the network gateway.
1
Power Communication module powered and functional
Permanent green
Synchronisation with the trip unit data
Flashing green
Internal fault
Permanent red
2
COM Modbus data transmission
Flashing green
Modbus transmission failure
Flashing red
3
Ethernet port Modbus 1
3
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