Table Of Contents

Clear Interchange Warnings (G Dataflow)

Version:
Last Modified: January 17, 2018

Clears the list of current interchange warnings.

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session in

Control that identifies a particular NI-SWITCH session established with the niSwitch Initialize With Topology node, the niSwitch Initialize With Options node, or the niSwitch Initialize 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

Indicator that identifies a particular NI-SWITCH session established with the niSwitch Initialize With Topology node, the niSwitch Initialize With Options node, or the niSwitch Initialize node and used for all subsequent NI-SWITCH 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.

Details

When developing a complex test system that consists of multiple test modules, it is generally a good idea to design the test modules so that they can run in any order. To do so, ensure that each test module completely configures the state of each instrument it uses. If a particular test module does not completely configure the state of an instrument, the instrument state depends on the configuration from a previously executed test module. Therefore, if you execute the test modules in a different order, the behavior of the instrument and therefore the entire test module is likely to change. This behavior change is generally instrument specific and represents an interchangeability problem.

You can use the niSwitch Reset Interchange Check node to test for such cases. After you call the niSwitch Reset Interchange Check node, the interchangeability checking algorithms in the specific driver ignore all previous configuration operations. By calling the niSwitch Reset Interchange Check node at the beginning of a test module, you can determine whether the test module has dependencies on the operation of previously executed test modules.

To guarantee that the niSwitch Get Next Interchange Warning node only returns those interchangeability warnings generated after calling the niSwitch Reset Interchange Check node, clear the list of interchangeability warnings by repeatedly calling the niSwitch Get Next Interchange Warning node until no interchangeability warnings are returned. If you are not interested in the content of those warnings, call the niSwitch Clear Interchange Warnings node.

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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