Wireless Modbus RTU RS-485 Network

IQ Home wireless Modbus RTU devices extend RS-485 networks over IQRF-DPA. A wireless Modbus master reads standard Modbus slave devices and sends their data to an IQ Home gateway, reducing the need for long RS-485 cable runs between distributed equipment.

Network architecture

• Modbus RTU sensors, meters or actuators connect locally to a wireless Modbus master.
• The master communicates with an IQ Home gateway over IQRF-DPA.
• The gateway exposes the data through Modbus TCP, MQTT, CODESYS or Node-RED, depending on the system design.

Typical applications

Typical uses include energy metering, industrial equipment monitoring, building services and retrofit projects where new control cabling is difficult or costly. Verify baud rate, parity, slave address and register mapping for each Modbus device before commissioning.