Connection cables and cable wiring, Rs-232 cable wiring, 5 connection cables and cable wiring -1 – Moxa Technologies CP-104UL User Manual
Page 63: Rs-232 cable wiring -1, 5connection cables and cable wiring
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Connection Cables and Cable Wiring
In this chapter, we illustrate the possible connections and cable wiring for the CP-104UL boards.
In serial data communications, DTE stands for Data Terminal Equipment, such as a PC’s COM1/2,
serial printers, and terminals, and DCE stands for Data Communication Equipment, such as
modems.
RS-232 Cable Wiring
Board Pinouts—DB44 Female
RS-232
Port 1
Port 2
Port 3
Port 4
13
TxD 9
TxD 5
TxD 1 TxD
14 RxD
10 RxD
6 RxD
2 RxD
15 RTS
11 RTS
7 RTS
3 RTS
28 CTS
24 CTS
20 CTS
16 CTS
29 DTR
25 DTR
21 DTR
17 DTR
30 DSR
26 DSR
22 DSR
18 DSR
42 DCD
39 DCD
35 DCD
31 DCD
44 GND
41 GND
37 GND
33 GND