©
National Instruments Corporation
3-1
cFP-20xx and cFP-BP-x User Manual
3
Feature Descriptions
Guarding against Network Failures (Network Watchdog)
The network watchdog feature of the cFP-20
xx
enables you to guard your
system against failures in the network connection, cables, or host computer.
If the network watchdog is enabled and the cFP-20
xx
loses communication
with all hosts or clients over the network, the cFP-20
xx
sets output channels
to predefined values (the watchdog state). The network watchdog is
disabled by default.
Note
National Instruments recommends leaving the network watchdog disabled when
you are running embedded applications on the cFP-20
xx
. Use the hardware watchdog for
embedded applications.
Network watchdog output values can be different than power-up output
values. For example, you may want to turn an output value on when you
power up, but turn it off if network communication is lost.
Refer to the
Measurement & Automation Explorer Help for FieldPoint
for
information about enabling and configuring the network watchdog.
Guarding against Other System Failures
(Hardware Watchdog)
In addition to the network watchdog, the cFP-20
xx
controller supports a
hardware watchdog that you can set up in LabVIEW RT. The hardware
watchdog enables the controller to respond in predetermined ways to
failures in the system. The VIs to control the hardware watchdog are
on the LabVIEW RT palette.
