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MQTT

MQTT Client

MQTT Client

Message Queuing Telemetry Transport

  • Automatic connection establishment and monitoring with automatic reconnect and resubscribe
  • Publishing of message up to 64 kB
  • Parallel subscription of different topics
  • Can be used simultaneously by several software modules on the controller
  • Application by the user software via PLC function block library or C/C++ header file
  • In C/C++ event-driven processing of incoming messages possible
  • In PLC detection of new messages via Boolean status indication
  • Optional communication to the broker via Websockets for asynchronous transfer in both directions
  • Simple commissioning without programming via variable interface
  • Last Will and Testament
  • Persistence: Data is stored over the reboot until it is acknowledged