DAQmx Switch Get Relay Position
Returns the current position of the relay or relays you specify. The instances of this polymorphic VI return the position of a single relay or multiple relays.
Use the pull-down menu to select an instance of this VI.
Place on the block diagram. |
Find on the Functions palette. |
Single
Returns the current position of a single relay.
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relay is the relay to query. A DAQmx switch constant lists all relays on switch devices installed in the system. | ||||||
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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. If an error occurs while this VI or function runs, the VI or function 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.
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position is the position of the relay.
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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, error out 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.
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Multiple
Returns the current position of a set of relays.
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relays is the set of relays to query. A DAQmx switch constant lists all relays available on devices installed in the system. Right-click the constant, and select Browse from the shortcut menu to select multiple relays. You also can supply a string that contains a comma-delimited list of relays. | ||||||
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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. If an error occurs while this VI or function runs, the VI or function 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.
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positions is the position of each relay. The order of this array corresponds to the order of relays.
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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, error out 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.
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