National Instruments NI 9411 Operating Instructions And Specifications page 7

Connecting the NI 9411
The NI 9411 has a 15-pin DSUB connector that provides
connections for 6 digital input channels.
Figure 1. NI 9411 Pin and Terminal Assignments
NI 9411 Operating Instructions and Specifications
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1 DI0a
9
DI0b
2 DI1a
DI1b 10
3 DI2a
DI2b 11
4 Supply (+5 V )
out
COM 12
5
Supply (+5 V )
out
DI3b 13
6
DI3a
DI4b 14
7 DI4a
DI5b 15
8 DI5a
V 0
sup
COM 1
6 ni.com