Table Of Contents

Configure Trigger (Configure Digital Edge Start Trigger) (G Dataflow)

Version:
Last Modified: September 14, 2017

Configures the Start trigger for digital edge triggering.

The digital pattern instrument responds to the trigger on a physical PXI chassis backplane trigger line and waits for this trigger after you call the Initiate node or the Burst Pattern node. The pattern does not burst until it receives this trigger.

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session in

Instrument session obtained from the niDigital Initialize with Options node.

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source

Parameter that specifies the trigger line you want to use.

Name Description
PXI_Trig0 Specifies PXI trigger line 0.
PXI_Trig1 Specifies PXI trigger line 1.
PXI_Trig2 Specifies PXI trigger line 2.
PXI_Trig3 Specifies PXI trigger line 3.
PXI_Trig4 Specifies PXI trigger line 4.
PXI_Trig5 Specifies PXI trigger line 5.
PXI_Trig6 Specifies PXI trigger line 6.
PXI_Trig7 Specifies PXI trigger line 7.
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edge

The active edge for the Start trigger.

Name Description
Rising edge

Specifies the signal transition from low level to high level.

Falling edge

Specifies the signal transition from high level to low level.

Default: Rising edge

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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session out

Handle that identifies the session in all subsequent NI-Digital node calls.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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


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