Our Modbus – MQTT Gateway Solution (PG-100-101-121) enables remote monitoring and control of Modbus devices using IoT technologies and the MQTT protocol. We support both Modbus RTU and Modbus TCP IP protocols.
Our MQTT driver supports TLS v1.2 hence it is possible to have a secure/encrypted MQTT communication.
The Modbus – MQTT Gateway Solution can be configured in the following combinations:
MQTT Client and a Modbus Client/master: This is the most typical application where the gateway being the client/master on the Modbus protocol gathers data from the field devices and then publishes this information over MQTT. Also it can subscribe to MQTT topics so that remote MQTT clients can send back commands via the subscriptions to enable any control action on the end devices.
MQTT Client and Modbus Server: This is a less common but our gateway can be configured to be a Modbus Server to simply pass data received over MQTT over to a Modbus client/master. Also any data written by the master can be published on MQTT.
