The Modbus protocol is available for Plug & Sense! as a secondary communication module, through the RS-232 or the RS-485 modules. This is an optional feature. The Modbus module is placed on socket 0 by default, being accessible through an additional and dedicated socket on the antenna side of the enclosure. On the other hand, the main radio interface of the Plug & Sense! device is placed on socket 1.
The user can choose between 2 probes to connect the Modbus protocol: A standard DB9 connector and a waterproof terminal block junction box. These options make the connections on industrial environments or outdoor applications easier.
The Modbus signals are wired according to the hardware used inside Plug & Sense! (RS-232 or RS-485 modules). Please refer to the corresponding guide on the Development section for further information.