Table Of Contents

Assign Static Channels (G Dataflow)

Last Modified: September 27, 2017

Configures DIO and PFI channels for static acquisition or for static generation, depending on whether session in is an acquisition or generation session.

A channel cannot simultaneously be assigned to static generation and dynamic generation.

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session in

Instrument session obtained from the Initialize Acquisition Session node, the Initialize Generation Session node, or the Initialize External Calibration node.

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channel list

List that specifies which DIO or PFI channels are configured as static.

Examples of valid syntax for this control are 0:31 or 0-15,16-31. Leave channel list blank to specify all channels. Use NONE to unassign all channels. On supported devices, you can select the following clocks using these strings: STROBE and DDC_CLKOUT. On supported devices, you also can select all supported PFI channels using strings such as PFI1, PFI26, and so on. The clock and PFI strings are not case sensitive and can be grouped with the standard input strings separated by commas. The following are examples of valid string syntax: 0, 4, 6, PFI1, 7 or 0-12, STROBE, DDC_CLKOUT.

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Note  

NI-HSDIO returns an error if an event is already routed to a PFI channel and you try to reserve that same channel for static use with this node.

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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 node calls.

The session out parameter is obtained from the Initialize Acquisition Session node or the Initialize Generation Session node.

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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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