PCI Express Boards
CP-132EL/CP-132EL-I
Board Side Pin Assignments—Female DB25
RS-422 & 4-wire RS-485
Pin
Signal
1
–
2
TxD1-(A)
3
GND1
4
–
5
TxD1+(B)
6
–
7
–
8
–
9
RxD0-(A)
10
–
11
–
12
RxD0+(B)
13
–
Device Side Pin Assignments
Male DB9 (CBL-M25M9x2-50)
Pin RS-422/RS-485-4W RS-485-2W
1
TxD-(A)
2
TxD+(B)
3
RxD+(B)
4
RxD-(A)
5
GND
6
–
7
–
8
–
9
–
Pin
Signal
Pin
14
–
1
15
RxD1-(A)
2
16
–
3
17
–
4
18
RxD1+(B)
5
19
–
6
20
–
7
21
TxD0-(A)
8
22
GND0
9
23
–
10
24
TxD0+(B)
11
25
–
12
13
–
–
Data+(B)
Data-(A)
GND
–
–
–
–
6-9
2-wire RS-485
Signal
Pin
Signal
–
14
–
–
15
Data1-(A)
GND1
16
–
–
17
–
–
18
Data1+(B)
–
19
–
–
20
–
–
21
–
Data0-(A)
22
GND0
–
23
–
–
24
–
Data0+(B)
25
–
–
Pin Assignments
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