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Chapter 3
Digital I/O
NI 6516 Signal Descriptions
NI 6517 Signal Descriptions
96
P7.COM (VCC)
Input
Power line for port 7
97, 98, 99
P7.GND
Input
Ground for port 7;
isolated from the
computer power supply
100
P7.+5V
Output
+5 V for port 7
Table 3-7.
NI 6516 Signal Descriptions
Pin Number
Signal Name
Input or
Output
Signal Description
1, 2, 3, 4, 20, 21, 22, 23
P0.<0..7>
Output
Data lines for port 0
6, 7, 8, 9, 24, 25, 26, 27
P1.<0..7>
Output
Data lines for port 1
10, 11, 12, 13, 29, 30, 31, 32
P2.<0..7>
Output
Data lines for port 2
15, 16, 17, 18, 33, 34, 35, 36
P3.<0..7>
Output
Data lines for port 3
5, 14, 28, 37
VCC
Input
Power lines for all
ports
19
COM (GND)
Input
Common line for all
ports
Table 3-8.
NI 6517 Signal Descriptions
Pin Number
Signal Name
Input or
Output
Signal Description
1, 2, 3, 4, 20, 21, 22, 23
P0.<0..7>
Output
Data lines for port 0
6, 7, 8, 9, 24, 25, 26, 27
P1.<0..7>
Output
Data lines for port 1
10, 11, 12, 13, 29, 30, 31, 32
P2.<0..7>
Output
Data lines for port 2
15, 16, 17, 18, 33, 34, 35, 36
P3.<0..7>
Output
Data lines for port 3
Table 3-6.
NI 6515 Signal Descriptions (Continued)
Pin Number
Signal Name
Input or
Output
Signal Description
