Use the DAQmx Timing Source properties to retrieve information about timing sources for Timed Loops.

Active Timing Source
Specifies the timing source from which to retrieve properties.
Control Loop From Task:Sleep Time
Indicates in microseconds the amount of time the Timed Loop sleeps after each sample clock pulse.
Digital Change Detection:Falling Edge Physical Channels
Indicates the names of the digital lines or ports on which to detect falling edges.
Digital Change Detection:Rising Edge Physical Channels
Indicates the names of the digital lines or ports on which to detect rising edges.
Digital Edge using Counter:Counter
Indicates the counter the timing source uses.
Digital Edge using Counter:Edge
Indicates on which edges of the digital signal each iteration of the Timed Loop executes.
Digital Edge using Counter:Edge Count
Indicates the number of edges of the digital signal that must occur for each iteration of the Timed Loop to execute.
Digital Edge using Counter:Terminal
Indicates the terminal to which you connect the digital signal you want to use for the timing source.
Frequency:Counter
Indicates the counter the timing source uses.
Frequency:Frequency
Indicates the frequency of the timing source.
Signal From Task:Signal
Indicates the signal the timing source uses.
Timing Source Type
Indicates the type of timing source.

NI-DAQmx VI and Function Reference

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