©
National Instruments Corporation
5
cRIO-9012/9014 Operating Instructions and Specifications
Connecting the Controller to a Network
Connect the controller to an Ethernet network using the RJ-45 Ethernet port
on the controller front panel. Use a standard Category 5 (CAT-5) or better
Ethernet cable to connect the controller
to an Ethernet hub, or use an
Ethernet crossover cable to connect the controller directly to a computer.
Caution
To prevent data loss and to maintain the integrity of your Ethernet installation,
do
not
use a cable longer than 100 m. If you are using 100 Mbps Ethernet, National
Instruments recommends using a CAT-5 or better shielded twisted-pair Ethernet cable.
If you need to build your own cable, refer to the
Cabling
section for more
information about Ethernet cable wiring connections.
The host computer communicates with the controller
over a standard
Ethernet connection. If the host computer is on a network, you must
configure the controller
on the same subnet as the host computer. If neither
the host computer nor the CompactRIO controller is connected to a
network, you can connect the two directly using a crossover cable.
If you want to use the controller
on a subnet other than the one the host
computer is on, first connect the controller on the same subnet as the host
computer. Use DHCP to assign an IP address or reassign a static IP address
for the subnet where you want it to be and physically move it to the other
subnet. The first time you configure the controller, you must also install
software on it. Refer to the
Measurement & Automation Explorer Help
for more information about configuring the controller in Measurement &
Automation Explorer (MAX). Contact your network administrator if you
need assistance configuring the host computer and controller
on the same
subnet.
Wiring Power to the Controller
Caution
You
must
install the controller on a CompactRIO chassis and tighten the captive
screws before you apply power to the controller. Installing the controller while power is
applied to it can cause damage to the chassis.
The controller
requires an external power supply that meets the
specifications in the
Power Requirements
section. The controller
filters and
regulates the supplied power and provides power for all of the I/O modules
in the chassis. You must connect a power supply to at least one pair of
V and C terminals. Optionally, you can connect a power supply to the
other pair of V and C terminals. The controller draws power from the
power supply with the higher voltage. The controller has one layer of
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