© National Instruments
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3-27
NI 651
8
Signal Descriptions
NI 6519 Signal Descriptions
19
COM (VCC)
Input
Power line for all ports
5, 14, 28, 37
GND
Input
Ground for all ports
Table 3-9.
NI 651
8
Signal Descriptions
Pin Number
Signal Name
Input or
Output
*
Signal Description
1, 2, 3, 4, 20, 21, 22, 23
P0.<0..7>
Input
Data lines for port 0
5, 6, 7, 8, 24, 25, 26, 27
P1.<0..7>
Input
Data lines for port 1
11, 12, 13, 14, 30, 31, 32, 33
P2.<0..7>
Output
Data lines for port 2
15, 16, 17, 18, 34, 35, 36, 37
P3.<0..7>
Output
Data lines for port 3
9
IN.COM
Input
Common line for all
input channels
10, 28, 29
VCC
Input
Power lines for all
ports
19
OUT.COM
(GND)
Input
Ground for all output
channels
* The NI 6518 inputs are isolated from the outputs.
Table 3-10.
NI 6519 Signal Descriptions
Pin Number
Signal Name
Input or
Output
*
Signal Description
1, 2, 3, 4, 20, 21, 22, 23
P0.<0..7>
Input
Data lines for port 0
5, 6, 7, 8, 24, 25, 26, 27
P1.<0..7>
Input
Data lines for port 1
11, 12, 13, 14, 30, 31, 32, 33
P2.<0..7>
Output
Data lines for port 2
15, 16, 17, 18, 34, 35, 36, 37
P3.<0..7>
Output
Data lines for port 3
Table 3-8.
NI 6517 Signal Descriptions (Continued)
Pin Number
Signal Name
Input or
Output
Signal Description