Universal PCI Board
Pin Assignments
5-15
DB44 (Female): RS-422
Pin
Signal
Pin
Signal
Pin
Signal
1
RXD3+(B)
16
CTS3+(B)
31
TXD3-(A)
2
TXD3+(B)
17
RXD3-(A)
32
CTS3-(A)
3
RTS3+(B)
18
RTS3-(A)
33
GND3
4
---
19
---
34
---
5
RXD2+(B)
20
CTS2+(B)
35
TXD2-(A)
6
TXD2+(B)
21
RXD2-(A)
36
CTS2-(A)
7
RTS2+(B)
22
RTS2-(A)
37
GND2
8
---
23
---
38
---
9
RXD1+(B)
24
CTS1+(B)
39
TXD1-(A)
10
TXD1+(B)
25
RXD1-(A)
40
CTS1-(A)
11
RTS1+(B)
26
RTS1-(A)
41
GND1
12
---
27
---
42
TXD0-(A)
13
RXD0+(B)
28
CTS0+(B)
43
CTS0-(A)
14
TXD0+(B)
29
RXD0-(A)
44
GND0
15
RTS0+(B)
30
RTS0-(A)
---
---
DB44 (Female): RS-485 (4-wire)
Pin
Signal
Pin
Signal
Pin
Signal
1
RXD3+(B)
16
---
31
TXD3-(A)
2
TXD3+(B)
17
RXD3-(A)
32
---
3
---
18
---
33
GND3
4
---
19
---
34
---
5
RXD2+(B)
20
---
35
TXD2-(A)
6
TXD2+(B)
21
RXD2-(A)
36
---
7
---
22
---
37
GND2
8
---
23
---
38
---
9
RXD1+(B)
24
---
39
TXD1-(A)
10
TXD1+(B)
25
RXD1-(A)
40
---
11
---
26
---
41
GND1
12
---
27
---
42
TXD0-(A)
13
RXD0+(B)
28
---
43
---
14
TXD0+(B)
29
RXD0-(A)
44
GND0
15
---
30
---
---
---
