Table Of Contents

Initialize With Channels (G Dataflow)

Version:
Last Modified: September 16, 2017

Creates and returns a new NI-FGEN session to the specified channel of a waveform generator that is used in all subsequent NI-FGEN calls.

Optionally sets the initial state of session properties Range Check, Cache, Simulate, Query Instrument Status, and Record Coercions.

connector_pane_image
datatype_icon

option string

Initial values of certain session properties.

If you do not specify one of these properties, the default value is used.

Property Name Property Defined Constant
Simulate Instrument:Inherent IVI Attributes:User Options:Simulate
RangeCheck Instrument:Inherent IVI Attributes:User Options:Range Check
Cache Instrument:Inherent IVI Attributes:User Options:Cache
QueryInstrStatus Instrument:Inherent IVI Attributes:User Options:Query Instrument Status

option string Syntax

option string uses the following syntax: attributeName=value

where attributeName is the name of the attribute, and value is the value to which the attribute is set.

To set multiple properties, separate them with a comma.

If simulation is enabled (Simulate=1), you can specify the waveform generator that you want to simulate by entering the following syntax in option string:

DriverSetup=Model:< driver model number >;BoardType:< module type >;MemorySize:< size of onboard memory in bytes >

When you configure multichannel waveform generators, option string specifies which channels to initialize. Valid values include channel ranges (for example, "Channels:0-1") and individual channels (for example, "Channels:1").

Table 1. option string Syntax Examples
Waveform Generator Model option string Syntax
PXI-5404 Simulate=1,DriverSetup=Model:5404;BoardType:PXI
PCI-5421 Simulate=1,DriverSetup=Model:5421;BoardType:PCI;MemorySize:268435456
PXIe-5450 Simulate=1,DriverSetup=Model:5450;Channels:0-1;BoardType:PXIe;MemorySize:268435456

Default: Simulate = False (0), RangeCheck = True (1), Cache = True (1), QueryInstrStatus = True (1)

datatype_icon

resource name

The instrument name. For example, "PXI1Slot3," where "PXI1Slot3" is an instrument name assigned by Measurement & Automation Explorer (MAX).

You can wire in the name of an IVI logical name or an IVI virtual name configured with the IVI Configuration utility. A logical name identifies a particular virtual instrument. A virtual name identifies a specific instrument and specifies the initial settings for the session.

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

datatype_icon

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

datatype_icon

channel name

Name of the waveform generator channel that the node uses.

datatype_icon

reset device

Boolean value that specifies whether or not to reset the waveform generator during the initialization procedure.

True The waveform generator resets to a known state.
False The waveform generator does not reset.

This input performs the same function as Reset.

Default: False

datatype_icon

session out

Reference to your instrument session to wire to the next node.

datatype_icon

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


Recently Viewed Topics