Communication specification of network port
SX series iComputer is equipped with 2/4 gigabit Ethernet ports, which are defined as follows:
| No. | Network port | Description |
| 1 | LAN 1 | Programming interface (for downloading and monitoring), supporting Modbus TCP, EtherNet/IP, Profinet, OPC UA, and free port communicationFactory Default Fixed IP Address: 192.168.1.200 |
| 2 | LAN 2/3/4 | Gigabit Ethernet port, supporting EtherCAT master station, Modbus TCP, EtherNet/IP, Profinet, OPC UA, and free port communication |
Remark: IP address of LAN1 and LAN2/3/4 cannot be in the same network segment
RJ45 network cable connection
The 100/1000Base-T(X) Ethernet interface adopts standard RJ45 connector, has self-adaptive function, can be automatically configured to 100M/1000M state and full duplex/half-duplex operation mode, and supports MDI/MDI-X self-identification function of cable, i.e., direct network cable or cross network cable can be used for connecting with terminal equipment and network equipment.

| Pin No. | MDI-X | MDI |
| 1 | Send/Receive Data (TRD1+) | Send/Receive Data (TRD0+) |
| 2 | Send/Receive Data (TRD1-) | Send/Receive Data (TRD0-) |
| 3 | Send/Receive Data (TRD0+) | Send/Receive Data (TRD1+) |
| 4 | Send/Receive Data (TRD3+) | Send/Receive Data (TRD2+) |
| 5 | Send/Receive Data (TRD3-) | Send/Receive Data (TRD2-) |
| 6 | Send/Receive Data (TRD0-) | Send/Receive Data (TRD1-) |
| 7 | Send/Receive Data (TRD2+) | Send/Receive Data (TRD3+) |
| 8 | Send/Receive Data (TRD2-) | Send/Receive Data (TRD3-) |