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DAQmx Configure Watchdog Expiration States (Counter Output) (G Dataflow)

Last Modified: July 19, 2019

Configures the expiration states for a counter watchdog timer task.

The DAQmx Watchdog properties contain additional watchdog timer configuration options.


task in

task in is the name of the task to clear. Unlike the task/channels in input on some nodes, you cannot wire a virtual channel to this input.


expiration states

expiration states contains the states to which to set counter physical channels when the watchdog timer expires. Each element of the array contains a counter physical channel name and the corresponding state for that counter physical channel.


physical channel

physical channel is the counter output channel to modify. You cannot modify dedicated counter input lines. The DAQmx physical channel constant lists all lines and ports for devices installed in the system.

You also can wire a string that contains a list or range of digital lines or ports to this input. If you have an array of lines or ports, use the DAQmx Flatten Channel String node to convert the array to a list.


expiration state

expiration state specifies the value to set the channel to upon expiration.

Name Description

Low logic.


High logic.

No Change

Expiration does not affect the state of the counter output. The channels retain their states at the time of the watchdog timer expiration, and no further counter generation runs.


error in

error in describes error conditions that occur before this node runs. This input provides standard 'error in' functionality.


task out

task out is a reference to the task after this node or function completes execution.


error out

error out contains error information. If error in indicates that an error occurred before this node ran, error out contains the same error information. Otherwise, error out describes the error status that this node produces.

Where This Node Can Run:

Desktop OS: Windows

FPGA: LabVIEW NXG does not support FPGA devices

Web Server: Not supported in VIs that run in a web application

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