1. After the RS485 is connected, the IP and port are fixed and cannot be changed. It can only be used as a TCP SERVER. 2. Plug in cable, open the TCP server port 192.168.0.72:5000 and then transfer data to each other. 3. The serial port that displays the help document can be connected or not. 4. Plug in the power supply and use 7-28V power supply; this product can be used as a TCP server. When in use, connect cable to the TCP client to open the specified IP and port, and then send data to RS485. RS485 can also send data to TCP devices. 5. If there is no problem with , "READY" will be returned via 485 Model:RS485 serial port to Ethernet Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use. Colour:As Shown Material:PCB Package Contents: 1 * Serial Communication Module 2 * Pin Header Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.