©
National Instruments Corp.
3
FP-DO-410
Figure 2.
Basic Field Connections (Two Channels Shown)
Table 1 lists the terminal assignments for the signals of each
channel.
Discrete Output Circuit
The discrete outputs of the FP-DO-410 consist of optically-
isolated sourcing outputs with overcurrent protection circuitry. In
the ON state, a transistor is turned on between the positive external
supply voltage (the V and V
sup
terminals) and the output (V
out
)
terminal. In the OFF state, this transistor is turned off, allowing
Table 1.
Terminal Assignments
Channel
Terminal Numbers
V
out
V
sup
COM
0
1
17
2, 18
1
3
19
4, 20
2
5
21
6, 22
3
7
23
8, 24
4
9
25
10, 26
5
11
27
12, 28
6
13
29
14, 30
7
15
31
16, 32
C
V
V
out
–
+
–
+
COM
a. Total Current Less
Than 5 Amps
Load
V
out
COM
Load
C
V
V
out
COM
b. Total Current Greater
Than 5 Amps
Load
V
out
V
sup
V
sup
COM
COM
COM
Load
