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Chapter 6: PLC Communications
Direct LOGIC PLCs RS-232C Serial (cont’d):
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
EA-3CBL
Direct Logic PLC RJ11 port: D3-340
RS-232C (p/n EA-3CBL)
To PLC
RJ11 Port
6–8
RJ11 4-pin
Phone Plug
(4P4C)
1 = RXD
2 = TXD
3 = do not use
4 = Sig ground
1234
Wiring Diagram
TXD
2
3
RXD
RXD
1
2
TXD
GND
4
5
shield
1
To C-more Touch
Panel PLC Port
8 = do not use
7 = do not use
6 = do not use
5 = Logic GND
4 = do not use
3 = RXD (232C)
2 = TXD (232C)
1 = Frame GND
15-pin
D-sub
(male)
1
15 = do not use
14 = do not use
15 13 = do not use
12 = do not use
11 = do not use
10 = do not use
9 = do not use
Note: Use the above wiring diagram if you need to make your own cable. We recommend using 22 AWG shielded cable.
®
EA-USER-M Hardware User Manual, 2nd Ed., 02/08