Configuration of communication lines of TCP/IP-TCP and TCP/IP-TCP Redundant categories.

Lines of categories TCP/IP-TCP and TCP/IP-TCP Redundant were designed for the needs of communication protocols which are built directly on TCP/IP. TCP/IP-TCP Redundant enables implementation of redundant communication (redundant network lines, redundant network interfaces) and configuration of two IP addresses of a communication partner.
Following protocols are supported at the present time:

Line TCP/IP-TCP

• Allen-Bradley CSP/PCC
• Datalogger ESC8816
• DLMS/COSEM
• DNP3
• Ethernet/IP
• Generic User Protocol
• HART
• IEC 60870-6 ICCP/TASE.2
• IEC 61850
• IEC 60870IEC 870-5-104
• IEC 87060870-5-104 Server
• IEC 60870-6 ICCP/TASE.25-104 Sinaut
• IoT over LoRaWAN/Sigfox
• KMZ Protocol
• MODBUS Client
• MODBUS Server
• MQTT Client (Message Queue Telemetry Transport)
• Orange GDEP
• SAE RTU
• Siemens SAPHIR
• Siemens SIMATIC S7 ISO on TCPSiemens SAPHIR
• Telegyr 809 Server
• Teltonika Codec14

Line TCP/IP-TCP Redundant

• DLMS/COSEM
• Generic User Protocol
• HART
• IEC 60870IEC 870-5-104 Sinaut
• IEC 87060870-5-104
• IEC 60870-6 ICCP/TASE.2
• MODBUS Client
• Siemens SIMATIC S7 ISO on TCP
• Siemens SAPHIR

TCP/IP-TCP line configuration

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Server - Host

IP address or network name of a computer. If the name is configured (and not an IP address in the format X.X.X.X), it will be converted into IP address using the standard name resolution mechanism provided by OS (hosts, DNS, WINS ..).
If server protocol is configured, IP address for KOM process to listen should be configured, i.e. IP address of one of the computer network interfaces which KOM process runs on. Example: 127.0.0.1 or localhost (local interface), 192.16.0.1.

Note: It is possible to use a symbolic address ALL - in this case the KOM process listens on chosen TCP port in all network interfaces which are available.
If the configured protocol is not the server protocol, the IP address of the communication partner to which KOM process connects should be configured.

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TCP/IP-TCP Redundant line configuration

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Primary Device - Host

Primary IP address of the communication partner to which KOM process connects. If the name is configured (and not the IP address in the format X.X.X.X), it will be converted into IP address using a standard name resolution mechanism provided by OS (hosts, DNS, WINS ..).

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Parameter Host can contain several (up to 8) IP addresses or network names of computers separated by comma or semicolon, e.g. 172.16.0.1; 172.16.0.2 (spaces are permitted before and after the IP address due to readability). See the documentation of a used communication protocol to find out whether it can utilize more than one IP address. For example the protocol IEC 870-5-104: if several IP addresses are configured (on TCP/IP-TCP or TCP/IP-TCP Redundant lines), connection is initially established to first IP address. If the connection breaks, KOM process tries to reconnect to second IP address, then to third etc.. After all configured IP addresses are tried, it uses again the first IP address.
This configuration can be used if several communication partners exist and they either provide the same valid data or only the one which is active, i.e. it communicates (and all others refuse the connections).
Other protocols (e.g. MODBUS Client) currently use only the first configured IP address.

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