KEYENCE LJ-H1W - Manual (Page 20)

Connecting via Ethernet
1-16 LJ-H1W-M-NO1-E
Connecting via Ethernet
This section describes how to connect the controller to a computer with an Ethernet connection. When using
Ethernet communication, one computer can be connected to multiple controllers. One of the connected
controllers can be selected for communication. The communication protocol is TCP/IP, while the connection uses
peer-to-peer communication.
Note Note
• Configure the settings so that there are different IP addresses used for the computer and each controller on the network.
• Operations are not guaranteed when connected through a router or a separate LAN connection.
• One computer cannot communicate with multiple controllers at the same time.
• Multiple computers cannot be connected to one controller.
Connecting one controller directly to the computer
Use a commercial Ethernet cross cable (CAT 5) (OP-42275) for the connection.
Connecting to two or more controllers
A 100BASE-TX or 10BASE-T hub is required to connect two or more controllers. Use commercial Ethernet
straight cables (OP-42210) to connect between the hub and the computer or controllers.
Connecting
Ethernet connector
Ethernet port
Cross cable
Ethernet connector
Straight cable
Ethernet port
Hub