©
National Instruments Corp.
5
FBUS-HSE/H1 LD Installation Guide
Figure 5.
DSub Connector Pinout
Powering the FBUS-HSE/H1 LD
An 11–30 VDC power supply is required by each FBUS-HSE/H1
LD on your network.
The power connector is a 6-pin screw terminal connector whose
pinout is shown in Figure 6.
Figure 6.
FBUS-HSE/H1 LD Power Connector Pinout
Connect the primary power supply to the center V and C pair. You
can connect an optional backup power supply to the left V and
C pair.
1
2
3
4
5
6
7
8
9
NC
NC
NC
NC
NC
NC
NC
Data +
Data –
NC = No Connection
v
v
v
c c
c
11–30 VDC
backup power
supply
(optional)
+
–
+
–
11–30 VDC
primary power
supply
V
C
To adjacent device
(optional connection)