1. Open the communication software of Modbus TCP master station in Huichuan, which is usually special software provided by Huichuan and can be installed and opened on the computer.

2. Select the Modbus TCP device to be connected in the software. Usually, there is a device list or device manager from which you can select devices to connect.

3. Connect to the device. After selecting a device in the device list, click the Connect button or similar option to establish a communication connection with the device.

4. Once you successfully connect to the device, you can see the related information of communication status on the software interface, including connection status, communication rate, data transmission status, etc.