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gaty · Member Joined: 01 Mar 2017 Posts: 188

C2C-Kommunikation via OPC UA PubSub mit SIMATIC S7-1500 auf Basis von MQTT
https://support.industry.siemens.com/cs/document/109797826/
With part 14 of the OPC UA specification (\3\), the communication mechanism "PubSub" was introduced. This mechanism is not based on the client-server principle as in conventional OPC UA communication (OPC 10000-4), but instead uses the "Publish/subscribe principle". This entry shows you the implementation of OPC UA PubSub for controllers of the type SIMATIC S7-1500.
The following scenarios arise when using OPC UA PubSub:
Configurable peer-to-peer communication between controller and PLC or HMIs: The stations are not directly connected with each other and a configuration in order to make the stations known to each other is not necessary. It can be a point-to-point connection or data distribution to many receivers (multicast).

Logging on numeroase systems: Sensors or actuators can write logs into a monitoring system, an HMI, an archive system for later retrieval.

OPC UA Servers that represent services or devices can stream data to applications hosted in the cloud. For example, back-end servers, big data analysis for system optimization, and predictive maintenance.

With the TIA library "LOpcUa", Siemens provides function blocks for the implementation of
OPC UA PubSub for SIMATIC S7-1500 controllers. Both the Publish and Subscribe blocks of this library implement PubSub via MQTT and use the transport protocol mapping "UADP" for this purpose.

This application example shows you how to use the blocks of the library using C2C communication as an example. Basically, any other communication partner that supports
OPC UA PubSub via MQTT can be used.
OPC UA PubSub via MQTT between SIMATIC S7-1500 OPC UA PubSub via MQTT between SIMATIC S7-1500

OPC UA PubSub via MQTT between SIMATIC S7-1500 OPC UA PubSub via MQTT between SIMATIC S7-1500

Downloads TIA 16
https://support.industry.siemens.com/cs/attachments/109797826/109797826_OPC_UA_PubSub_MQTT_DOC_V1_0_en.pdf
https://support.industry.siemens.com/cs/attachments/109797826/109797826_OPC_UA_PubSub_MQTT_PROJ_V1_0.zip

https://ulozto.net/tamhle/7onxXaUr8tjV/

https://anonfiles.com/9fyfdfUdu5/109797826_OPC_UA_PubSub_MQTT_DOC_V1_0_en_pdf
https://anonfiles.com/L2yed3U4u4/109797826_OPC_UA_PubSub_MQTT_PROJ_V1_0_zip