
PCI Express Board User’s Manual Pin Assignments
5-13
Device Side Pin Assignments
Male DB9 (CBL-M25M9x2-50)
15
69
Pin
RS-422 /
4-wire RS-485
2-wire RS-485
1
TxD-(A) ---
2
TxD+(B) ---
3
RxD+(B) Data+(B)
4
RxD-(A) Data-(A)
5
GND GND
6
--- ---
7
--- ---
8
--- ---
9
--- ---
CP-114EL/CP-114EL-I
Board Side Pin Assignments—Female DB44
115
44 31
1630
RS-232
Pin Signal Pin Signal Pin Signal Pin Signal
1
TxD1
13
TxD0
25
DTR1
37
GND
2
RxD2
14
RxD0
26
DSR1
38
---
3
RTS3
15
RTS0
27
---
39
DCD1
4
---
16
CTS3
28
CTS0
40
---
5
TxD2
17
DTR3
29
DTR0
41
GND
6
RxD2
18
DSR3
30
DSR0
42
DCD0
7
RTS2
19
---
31
DCD3
43
---
8
---
20
CTS2
32
---
44
GND
9
TxD1
21
DTR2
33
GND
10
RxD1
22
DSR2
34
---
11
RTS1
23
---
35
DCD2
12
---
24
CTS1
36
---
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