MelsecQ via TCP/IP

The Ethernet module (models QJ71E71-100, QJ71E71 and QJ71E71-B2) is an interface module on the PLC side for connecting the Q series PLC with the host system, such as a personal computer and a work station where Plant SCADA is installed, and between PLCs using the TCP/IP or UDP/IP communication protocol via Ethernet (100BASE-TX, 10BASE-T, 10BASE5, 10BASE2).

The following diagram illustrates how the MelsecQ Ethernet module communicates with the external device.