©
National Instruments Corp.
13
FP-TB-10 Operating Instructions
isolated, each can be used with either sinking or sourcing devices.
If you do not need channel-to-channel isolation, you can use the V
and C terminals to bus-connect power supplies for discrete-output
field devices.
Figure 14.
Connecting Sourcing and Sinking Devices to the FP-DI-DC
Figure 15.
Wiring Diagram for Discrete AC Input Modules
FP-DI-DC
+
1a
1b
2a
2b
Sourcing
Device
–
FP-DI-DC
1a
1b
+
2a
2b
Sinking
Device
–
FP-DI-AC
xxx
1a
1b
Load
VAC
25–70 Hz
2a
2b