MQTT (MQTT stands for Message Queuing Telemetry Transport) is an IoT-based driver, but the communication principle – from the point of view of Reliance – is different from that of IoT Communication Driver (IoT stands for Internet of Things).
In the MQTT protocol, the data transfer format and algorithms are defined precisely.
The communication driver is a DLL loaded into memory by the Reliance 4 Driver Server program, which can be launched either as a Windows service at Windows startup or as a standard application at the start of a visualization project. Information required to make a connection with devices is read from the visualization project. After reading this information, communication to all connected devices is activated.
The communication driver acts as a client and connects to the server, the so-called MQTT broker. All clients communicate with each other through this broker.
Haven't found what you were looking for? Use this form to inform us about it.