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4-7
Figure 4-9.
NI 6516 GND Connection Example
Figure 4-10.
NI 651
8
GND Connection Example
Refer to the
, for more
information.
Output Signal Connection Example (Sinking Current)
The following figures show examples of driving a load with the photocouplers and Darlington
arrays (sinking current).
Caution
Make sure that
P<0..7>.COM (VCC)
is connected to the positive pole of
the power supply and that
P<0..7>.GND
is connected to the negative pole of the
R
L0
. . .
P0.0
P0.1
P0.2
P
3
.7
VCC, Pin 5
VCC, Pin14
VCC, Pin 28
VCC, Pin
3
7
COM
+
–
+5 V ~ +
3
0 V
R
L0
. . .
P0.0
P0.1
P0.2
P
3
.7
VCC, Pin10
VCC, Pin 28
VCC, Pin 29
COM
+
–
+5 V ~ +
3
0 V