QuickStart Guide PN/EtherNetIP Coupler | Version 3 | 13.08.2020
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9
MQTT Publisher
The PN/EtherNetIP Coupler provides PROFINET / EtherNetIP communication as well as an MQTT
Publisher. MQTT is a widely used and simple protocol for distributing information in large networks. The
MQTT Publisher can be activated via the PROFINET configuration on the PROFINET or EtherNetIP
interface.
For all IO modules defined in the PROFINET configuration, the current values are sent via MQTT when
values change. Since MQTT works slower than the primary PROFINET/EtherNetIP communication, it is
possible that not all value changes are transmitted via MQTT, but always only the last value state.
9.1
MQTT Publisher settings
To distribute data about MQTT in a network we always need at least one MQTT broker. The broker can
run anywhere in the network. The settings of the MQTT publishers can be specified separately for both
network sides on the website under "MQTT".
ClientID:
The name of the MQTT Publisher
Username / Password: Optional username and password for login to the MQTT broker
Broker IP address:
Address of MQTT-Broker
Broker TCP Port:
MQTT-Port for MQTT-Broker
Keep alive (seconds): MQTT- Connection monitoring during inactivity
The MQTT Publisher of the PN/ModbusTCP Coupler currently does not provide encryption!
