© National Instruments
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3-25
NI 6515 Signal Descriptions
Table 3-6.
NI 6515 Signal Descriptions
Pin Number
Signal Name
Input or
Output
Signal Description
1, 2, 3, 4, 5, 6, 7, 8
P0.<0..7>
Input
Data lines for port 0
9, 10, 11, 12
P0.COM
Input
Common lines for port 0
51, 52, 53, 54, 55, 56, 57, 58
P1.<0..7>
Input
Data lines for port 1
59, 60, 61, 62
P1.COM
Input
Common lines for port 1
13, 14, 15, 16, 17, 18, 19, 20
P2.<0..7>
Input
Data lines for port 2
21, 22, 23, 24
P2.COM
Input
Common lines for port 2
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 (VCC)
Input
Power line for port 4
35, 36, 37
P4.GND
Input
Ground for port 4;
isolated from the
computer power supply
76, 77, 78,79, 80, 81, 82, 83
P5.<0..7>
Output
Data lines for port 5
84
P5.COM (VCC)
Input
Power line for port 5
85, 86, 87
P5.GND
Input
Ground for port 5;
isolated from the
computer power supply
38, 39, 40, 41, 42, 43, 44, 45
P6.<0..7>
Output
Data lines for port 6
46
P6.COM (VCC)
Input
Power line for port 6
47, 48, 49
P6.GND
Input
Ground for port 6;
isolated from the
computer power supply
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