DAQmx Connect Terminals (VI)

DAQmx - Data Acquisition VIs and Functions

Edition Date: January 2019

Part Number: 370469AP-01

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Owning Palette: DAQmx Signal Routing VIs
Installed With: NI-DAQmx

Creates a route between a source and destination terminal. The route can carry a variety of digital signals, such as triggers, clocks, and hardware events.

The source and destination terminals can be on different devices as long as a connecting public bus, such as RTSI or the PXI backplane, connects the devices. The DAQmx Connect Terminals VI does not modify a task. When the VI runs, the route is immediately reserved and committed to hardware. This type of routing is called immediate routing.

DAQmx Connect Terminals

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source terminal specifies the originating terminal of the route. A DAQmx terminal constant lists all terminals available on devices installed in the system. You also can specify a source terminal by wiring a string that contains a terminal name.

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destination terminal specifies the receiving terminal of the route. A DAQmx terminal constant provides a list of all terminals available on devices installed in the system. You also can specify a destination terminal by wiring a string that contains a terminal name.

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invert polarity specifies whether to invert the signal this VI routes from the source terminal to the destination terminal. If the device is not capable of signal inversion or if a previous route reserved the inversion circuitry in an incompatible configuration, attempting to invert the signal causes an error.

no (0)

Do not invert the signal.

yes (1)

Invert the signal.

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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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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.

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code is the error or warning code. The default is 0. If status is TRUE, code is a negative error code. If status is FALSE, code is 0 or a warning code.

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source identifies where an error occurred. The source string includes the name of the VI that produced the error, what inputs are in error, and how to eliminate the error.

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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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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.

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code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.

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source identifies where and why an error occurred. The source string includes the name of the VI that produced the error, what inputs are in error, and how to eliminate the error.

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