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