História stránky

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• Protocol IEC 870-5-104 Sinaut is a specific implementation of the protocol IEC 104 designed for redundant communication with the Sinaut Spectrum system.
• The IEC 870-5-104 protocol, which implements multiple options for setting redundancy parameters, is much more common in practice.
• The MQTT Client protocol allows connection to two independent MQTT brokers on a TCP/IP-TCP Redundant line.

Note on TLS communication to the cloud

In the TLS implementation in the D2000 KOM process, the TLS extension "server_name" was added to the TLS Client Hello message (establishing a TLS connection), whereby the symbolic name specified in the "TCP/IP - TCP" or "TCP/IP - TCP Redundant" line configuration is sent as "server_name". This enables, for example, the functionality of the MQTTS protocol in the AWS environment, where there are multiple customers on one IP address, and it is necessary to determine which hostname the client is connecting to.
Note: If the IP address is not specified, the TLS extension "server_name" is not used in the TLS Client Hello message.

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