Discrete Output Circuit - National Instruments FieldPoint FP-DO-410 Operating Instructions Manual

C V
a. Total Current Less
Than 5 Amps
Figure 2. Basic Field Connections (Two Channels Shown)
Table 1 lists the terminal assignments for the signals of each
channel.
Channel
0
1
2
3
4
5
6
7

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
terminal. In the OFF state, this transistor is turned off, allowing
© National Instruments Corp.
–
+
V
out
Load
COM
V
out
Load
COM
Table 1. Terminal Assignments
V
out
1
3
5
7
9
11
13
15
sup
C V
V
COM
COM
V
COM
COM
b. Total Current Greater
Than 5 Amps
Terminal Numbers
V
sup
17
19
21
23
25
27
29
31
terminals) and the output (V
3
sup
V
out
Load
sup
V
out
Load
COM
2, 18
4, 20
6, 22
8, 24
10, 26
12, 28
14, 30
16, 32
–
+
)
out
FP-DO-410