Configure an 8 Port Modbus RTU module

You can configure an 8 port Modbus RTU module on your Connect Sensor. An 8 port Modbus RTU module consists of 8 inputs and 8 outputs which can be mapped onto Modbus registers, holding registers, or coils. You can configure the virtual inputs and outputs in the Input Configuration and Output Pins configuration pages.

Multiple MODBUS modules can be created for the same address to increase the number of available inputs and outputs.

A 16-Port MODBUS module supports 2-wire RS485 communications with a MODBUS RTU protocol.

  1. Access the web UI for Connect Sensor from the Device Summary page. The Automation Dashboard displays.

  2. Choose Automation > I/O Module. The I/O Module Configuration page displays.

  3. In the Add a New Device section, select 8 Port Modbus Input from the New Device Type field.

  4. In the Address field, enter the address for the module. Addresses for 16-port Modbus I/O RTU modules (RS485) are hexadecimal numbers between 01 and EF. You must use caps for Hex. This address must match the I/O module's address assignment.

  5. Click Add. The module is saved and displays in the Configured Devices section. It is enabled by default. You can disable it if needed.