W-3: Com Port 1 (Ethernet) Wiring
Com Port 1 (Ethernet) supports 10/100 Base-T Ethernet with an RJ-45 style connector.
You can use both straight and cross over cables with Com Port 1.
Wiring Strategy
• There are two wiring methods to connect to devices
which support Modbus TCP protocol.
• Case 1: Connect Com Port 1 to a device that supports
Modbus TCP protocol directly such as a PC.
• Case 2: Connect Com Port 1 to other devices that support
the Modbus TCP protocol via a switch or hub.
Case 1: Connect Com Port 1 to a device that supports the Modbus TCP protocol
directly such as a PC.
In this illustration a PLC unit is connected directly to a PC.
W-3
Port 1 Pin Descriptions
1 TX+ Transmit Data (+)
2 TX-
Transmit Data (-)
3 RX+ Receive data (+)
4 NC
Not connected
5 NC
Not connected
6 RX- Receive Data (-)
7 NC
No connection
8 NC
No connection
1
8
8 pin RJ45 Phone
Type Jack
CLICK PLUS PLC Hardware User Manual, 1st Edition, Rev. B – C2-USER-M
4-16
Chapter 4: PLC Communications
