niSwitch Can Connect Channels?

NI-SWITCH LabVIEW

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niSwitch Can Connect Channels?

Verifies that a path between channel 1 and channel 2 can be created.

If a path is possible in the switch module, the availability of that path is returned given the existing connections. If the path is possible but in use, an Implicit Connection Exists warning is returned.

instrument handle identifies a particular NI-SWITCH session established with niSwitch Initialize With Topology, niSwitch Initialize With Options, or niSwitch Initialize.

channel 1 specifies one of the channel names of the desired path. Pass the other channel name as channel 2. Refer to Devices for valid channel names for the switch module.

Examples of valid channel names:

ch0, com0, ab0, r1, c2, cjtemp

channel 2 specifies one of the channel names of the desired path. Pass the other channel name as channel 1. Refer to Devices for valid channel names for the switch module.

Examples of valid channel names:

ch0, com0, ab0, r1, c2, cjtemp

error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurs before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

	status is TRUE (X) if an error occurred before this VI ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI ran. The default is FALSE.
	code is the error or warning code. The default is 0. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

instrument handle out identifies a particular NI-SWITCH session established with niSwitch Initialize With Topology, niSwitch Initialize With Options, or niSwitch Initialize and used for all subsequent NI-SWITCH calls.

path capability indicates whether a path is valid.

Path Status	Description
Path Available	The path is possible and available.
Path Exists	The path is possible, but already exists.
Path Unsupported	The path is not possible in the specified switch module and topology.
Resource In Use	The path is possible, but elements of the path are in use by another existing path. You must destroy the other path before creating this one.
Source Conflict	The path is possible, but connecting the channels will connect two sources.
Channel Not Available	Channel 1 or channel 2 is a configuration channel and is thus unavailable for external connections.

error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.

	status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
	code is the error or warning code. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

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