3-24
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ni.com
Chapter 3
Digital I/O
63, 64, 65, 66, 67, 68, 69, 70
P3.<0..7>
Input
Data lines for port 3
71, 72, 73, 74
P3.COM
Input
Common lines for port 3
25, 75
NC
—
No connection
26, 27, 28, 29, 30, 31, 32, 33
P4.<0..7>
Output
Data lines for port 4
34
P4.COM (GND)
Input
Ground for port 4;
isolated from the
computer power supply
35, 36, 37
P4.VCC
Input
Power lines for port 4
76, 77, 78,79, 80, 81, 82, 83
P5.<0..7>
Output
Data lines for port 5
84
P5.COM (GND)
Input
Ground for port 5;
isolated from the
computer power supply
85, 86, 87
P5.VCC
Input
Power lines for port 5
38, 39, 40, 41, 42, 43, 44, 45
P6.<0..7>
Output
Data lines for port 6
46
P6.COM (GND)
Input
Ground for port 6;
isolated from the
computer power supply
47, 48, 49
P6.VCC
Input
Power lines for port 6
50
P6.+5V
Output
+5 V for port 6
88, 89, 90, 91, 92, 93, 94, 95
P7.<0..7>
Output
Data lines for port 7
96
P7.COM (GND)
Input
Ground for port 7;
isolated from the
computer power supply
97, 98, 99
P7.VCC
Input
Power lines for port 7
100
P7.+5V
Output
+5 V for port 7
Table 3-5.
NI 6514 Signal Descriptions (Continued)
Pin Number
Signal Name
Input or
Output
Signal Description
