IO-Link master with EtherCAT interface DataLine 4 ports IP 65 / IP 66 / IP 67
66
Notes on the states of an MQTT connection:
Note: Connection states
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To create an MQTT connection, perform the following steps in sequence:
Ensure that the MQTT broker can be reached and that the selected port of the MQTT broker is
enabled for data transmission.
Max. number of simultaneous MQTT connections: 10
Wildcards "+" and "#" in topics are not supported.
► Activate MQTT command channel.
► Set the IP address of the MQTT.
► Set the port number of the MQTT broker.
► Set topic.
► Set standard response topic.
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The command channel is created with the selected properties.
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The user can publish on the topic with the IoT Core.
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MQTT clients can subscribe to the topic.
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Note: Connection states
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The following status diagram shows the influence of the services "start", "stop" and "reset" on the
status of an MQTT connection:
After the initialisation in the "init" state has been completed, the connection automatically changes to
the "running" state.
The connection automatically switches to the "error" state if at least one of the following events occurs:
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no MQTT broker available