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EKI-122xR-CE Series User Manual
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2.4
Connecting the Modbus Router to Ethernet
Ports
2.4.1
RJ45 Ethernet Cable Wiring
For RJ45 connectors, data-quality, twisted pair cabling (rated CAT5 or better) is
recommended. The connector bodies on the RJ45 Ethernet ports are metallic and
connected to the GND terminal. For best performance, use shielded cabling.
Shielded cabling may be used to provide further protection.
Figure 2.7 Ethernet Plug & Connector Pin Position
Maximum cable length: 100 meters (328 ft.) for 10/100BaseT.
2.5
Serial Connection
EKI-122xR-CE Series provides eight ports DB9 (male) connectors. RS-232/422/485
pin assignments as below:
Figure 2.8 DB 9 Pin Position
Straight-thru Cable Wiring
Cross-over Cable Wiring
Pin 1
Pin 1
Pin 1
Pin 3
Pin 2
Pin 2
Pin 2
Pin 6
Pin 3
Pin 3
Pin 3
Pin 1
Pin 6
Pin 6
Pin 6
Pin 2
1
8
Pin
1
2
3
4
5
6
7
8
9
RS-232
DCD
RX
TX
DTR
GND
DSR
RTS
CTS
RI
RS-422
TX-
TX+
GND
RX+
RX-
RS-485
DATA-
DATA+
GND
5
9
1
6
Summary of Contents for EKI-122 R-CE Series
Page 1: ...User Manual EKI 122xR CE Series 1 2 4 port Modbus Router ...
Page 12: ...Chapter 1 1Product Overview ...
Page 22: ...Chapter 2 2Modbus Router Installation ...
Page 34: ...EKI 122xR CE Series User Manual 23 ...
Page 35: ...Chapter 3 3Configuration ...