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Initialize With Options (G Dataflow)

Version:
Last Modified: September 27, 2017

Creates a new instrument driver session, preparing a DMM for use with NI-DMM.

You can use this node to set the initial state of the Range Check, Query Instrument Status, Cache, Simulate, and Record Value Coercions session properties.

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resource name

Resource name of the device to initialize. The resource name is assigned in NI MAX.

Examples

The following examples are valid syntax for this parameter:

  • NI-DAQmx name
  • DAQ::NI-DAQmx name[::INSTR]
  • DAQ::Traditional NI-DAQ device number[::INSTR]
  • IVI logical name
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Caution  

All IVI names for the resource name, such as logical names or virtual names, are case-sensitive. If you use logical names, driver session names, or virtual names in your program, you must make sure that the name you use matches the name in the IVI Configuration Store file exactly, without any variations in the case of the characters in the name.

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id query

Boolean value that specifies whether or not to verify that the device you initialize is supported by NI-DMM.

True Query the instrument ID and verify that it is supported.
False Do not verify device support.

Default: True

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reset device

Boolean value that specifies whether to reset the DMM during initialization.

True Reset the device to a known state during initialization
False Do not reset the device during initialization

Default: True

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option string

Initial values for session properties.

This parameter should be in the format "PropertyName=Value." To set multiple properties, separate their assignments with a comma. If you do not specify a value for a property, the session will use the default value for that property.

The following table lists the session properties and their default values:

Property Name Default Values
RangeCheck TRUE 1
QueryInstrumentStatus FALSE 0
Cache TRUE 1
Simulate FALSE 0
RecordValueCoercions FALSE 0
DriverSetup "" (empty string) ""

Refer to Simulating NI Digital Multimeters for more information.

Default:

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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

Instrument identifier for subsequent NI-DMM nodes.

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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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