ModBus sensor

The ModBus sensor is a LoRaWAN class A sensor. It manages two different power supplies, one is external and may range from 9 to 24V, the other one is internal on a disposable A 3.6V battery. To use the external power supply, just connect a compatible one on the “Ext power” connector.

The ModBus sensor integrates all the connections needed for a RS485 bus: A, B and GND. It also includes an internal antenna.

The ModBus sensor allows to communicate (throught the LoRaWAN network) with any equipment implementing the ModBus protocol as slave. Thus, it works as a ModBus master.

The ModBus equipment to communicate with, must use the RTU coding type and a RS485 bus as the physical link. Moreover, the ModBus equipment must support at least one of the baudrates in the following list: 1200, 2400, 4800, 9600, 19200, 38400, 57600 or 115200 bit/s.

If these prerequisites are fulfilled, the nke Watteco ModBus sensor is compatible with the equipment, and thus, can correctly communicate with it to get or set any modbus registers presents inside the equipment. So, the ModBus equipment is now LoRaWAN ready thanks to the sensor.