PCI Express Boards
Pin Assignments
7-12
CP-118E-A-I/CP-138E-A-I
Board Side Pin Assignments—Female DB78
RS-232
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
GND7
21
RTS7
40
CTS7
60
DCD7
2
TXD7
22
DTR7
41
DSR7
61
RXD7
3
–
23
RTS6
42
–
62
DCD6
4
GND6
24
DTR6
43
CTS6
63
RXD6
5
TXD6
25
–
44
DSR6
64
–
6
GND5
26
RTS5
45
CTS5
65
DCD5
7
TXD5
27
DTR5
46
DSR5
66
RXD5
8
–
28
RTS4
47
–
67
DCD4
9
GND4
29
DTR4
48
CTS4
68
RXD4
10
TXD4
30
–
49
DSR4
69
–
11
GND3
31
RTS3
50
CTS3
70
DCD3
12
TXD3
32
DTR3
51
DSR3
71
RXD3
13
–
33
RTS2
52
–
72
DCD2
14
GND2
34
DTR2
53
CTS2
73
RXD2
15
TXD2
35
–
54
DSR2
74
–
16
GND1
36
RTS1
55
CTS1
75
DCD1
17
TXD1
37
DTR1
56
DSR1
76
RXD1
18
–
38
RTS0
57
–
77
DCD0
19
GND0
39
DTR0
58
CTS0
78
RXD0
20
TXD0
59
DSR0
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