Universal PCI Board
Pin Assignments
5-12
DB78 (Female): RS-422, RS-485 (4-wire)
Pin
Signal
Pin
Signal
Pin
Signal
1
GND7
27
RxD5-(A)
53
---
2
RxD7+(B)
28
---
54
---
3
---
29
RxD4-(A)
55
---
4
GND6
30
---
56
---
5
RxD6+(B)
31
---
57
---
6
GND5
32
RxD3-(A)
58
---
7
RxD5+(B)
33
---
59
---
8
---
34
RxD2-(A)
60
TxD7-(A)
9
GND4
35
---
61
TxD7+(B)
10
RxD4+(B)
36
---
62
TxD6-(A)
11
GND3
37
RxD1-(A)
63
TxD6+(B)
12
RxD3+(B)
38
---
64
---
13
---
39
RxD0-(A)
65
TxD5-(A)
14
GND2
40
---
66
TxD5+(B)
15
RxD2+(B)
41
---
67
TxD4-(A)
16
GND1
42
---
68
TxD4+(B)
17
RxD1+(B)
43
---
69
---
18
---
44
---
70
TxD3-(A)
19
GND0
45
---
71
TxD3+(B)
20
RxD0+(B)
46
---
72
TxD2-(A)
21
---
47
---
73
TxD2+(B)
22
RxD7-(A)
48
---
74
---
23
---
49
---
75
TxD1-(A)
24
RxD6-(A)
50
---
76
TxD1+(B)
25
---
51
---
77
TxD0-(A)
26
---
52
---
78
TxD0+(B)
DB78 (Female): RS-485 (2-wire)
Pin
Signal
Pin
Signal
Pin
Signal
1
GND7
15
Data2+(B)
29
Data4-(A)
2
Data7+(B)
16
GND1
30
---
3
---
17
Data1+(B)
31
---
4
GND6
18
---
32
Data3-(A)
5
Data6+(B)
19
GND0
33
---
6
GND5
20
Data0+(B)
34
Data2-(A)
7
Data5+(B)
21
---
35
---
8
---
22
Data7-(A)
36
---
9
GND4
23
---
37
Data1-(A)
10
Data4+(B)
24
Data6-(A)
38
---
11
GND3
25
---
39
Data0-(A)
12
Data3+(B)
26
---
40
---
13
---
27
Data5-(A)
41
---
14
GND2
28
---
42
---
