National Instruments NI 9421

NI 9421/9423 8 ni.com
Connecting the NI 9421/9423
The NI 9421/9423 provides connections for eight digital input
channels.
Figure 2. NI 9421/9423 Terminal and Pin Assignments
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
NC
COM
03
47
0
1
2
3
4
5
6
7
8
9
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
DI0
NC
DI1
DI2
NC
DI3
DI4
NC
DI5
DI6
NC
DI7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
03
47