MTI Instruments Accumeasure Digital Series LabVIEW Owner's manual

Brand: MTI Instruments

Model: Accumeasure Digital Series LabVIEW

Type: Owner's manual

Digital

Accumeasure

LabVIEW

Interface

7001-0058

Revision 1.12

12 Dec 2014

MTI Instruments Inc

325 Washington Avenue Ext

Albany New York 12055

Digital Accumeasure LabVIEW Interface 7001-0058 Revision 1.12

Table of Contents

Page

Digital Accumeasure LabVIEW Interface .........................................................1

Digital Accumeasure LabVIEW Functions .......................................................2

Digital Accumeasure LabVIEW Examples .......................................................3

Digital Accumeasure LabVIEW Application Template......................................5

Appendix

Page

Digital Accumeasure LabVIEW Interface 7001-0058 Revision 1.12

Digital Accumeasure LabVIEW Interface

The Digital Accumeasure LabVIEW interface is built upon the Digital

Accumeasure DLL interface package (DACDLL32.DLL). A set of LabVIEW VIs

have been implemented that use the LabVIEW CallLibrary function to access the

appropriate DACDLL32 function. As an example, an illustration of the

ConnectToCommandChannel VI is presented below.

Each VI needs to reference the DACDLL32.dll file and must use the Windows

stdcall calling convention. DLL function arguments must be defined. Refer to the

Digital Accumeasure Communications Interface DLL manual (MTI 7001-0054) for

details of each DLL function.

Digital Accumeasure LabVIEW Interface 7001-0058 Revision 1.12

Digital Accumeasure LabVIEW VI functions

The screen shots below identifies the names of the various Vis supplied with the

Digital Accumeasure.

Digital Accumeasure LabVIEW Interface 7001-0058 Revision 1.12

Digital Accumeasure LabVIEW Examples

Several LabVIEW examples have been implemented to illustrate the use of some

of the supplied VI functions. Examples provided include:

Example Name

Description

AccumeasureExample.vi

This example combines many of the

aspects of the other examples into an

integrated framework. It illustrates

how to respond to button clicks to

scan the network and connect to a

Digital Accumeasure unit. Once

connected, data points are constantly

acquired and displayed while

monitoring for settings changes.

AccumeasureExampleExpandedwUSB.vi

This example combines many of the

aspects of the other examples into an

integrated framework. It illustrates

how to respond to button clicks to

scan the Ethernet and USB networks

and connect to a Digital

Accumeasure unit. Once connected,

data points are constantly acquired

and displayed while monitoring for

settings changes.

GetFunctionTestingExample.vi

This example illustrates the use of all

VI functions that can be called to get

configuration information from a

Digital Accumeasure unit.

GetStreamingDataRecordTest.vi

This example illustrates a method for

recovering streaming data records

from the Digital Accumeasure.

ScanForUnitsExample.vi

This example shows how to use the

ScanForUnits VI which will scan the

Ethernet interface and search for all

connected Digital Accumeasure units

and load a user interface combobox

control with a list of those units found.

ScanForUSBUnitsExample.vi

This example shows how to use the

ScanUSBForUnits VI which will scan

thesystem and search for all USB

connected Digital Accumeasure units

and load a user interface combobox

control with a list of those units found.

Digital Accumeasure LabVIEW Interface 7001-0058 Revision 1.12

SimpleDataCollectionExample.vi

This example illustrates the use of the

ReadAllValues VI. It also shows how

to convert displacement values from

nm to mm for display.

StreamingTest.vi

This example illustrates a high level,

file based method for recovering

streaming data from the Digital

Accumeasure.

UserSettingsExample.vi

This example illustrates the use of the

Vis that support the reading and

writing of most Digital Accumeasure

operational control parameters.

Digital Accumeasure LabVIEW Interface 7001-0058 Revision 1.12

Digital Accumeasure LabVIEW Application Template

In order to effectively use the Digital Accumeasure LabVIEW Vis, a specific

sequence of function calls must be followed. The diagram below illustrates the

required sequence.

1. OpenInterface The very first function call must be to OpenInterface.

This function prepares the underlying DLL and returns

an interface handle that must be used for most other

function calls.

2. Connect Provided that a valid handle has been obtained, the

second step is to call the Connect function. A

communications address must be provided.

3. User Application The user application makes calls to other DLL

functions to perform its function using the interface

handle for the open connection to a Digital

Accumeasure unit..

4. Disconnect After the user application completes, the Disconnect

function must be called to release the Digital

Accumeasure. Failure to disconnect can cause the

Digital Accumeasure to reject all future connection

requests until it is powered off and then powered on.

5. CloseInterface The very last function call must be to CloseInterface.

This function releases the underlying DLL.

MTI Instruments Accumeasure Digital Series LabVIEW Owner's manual

Brand: MTI Instruments

Model: Accumeasure Digital Series LabVIEW

Type: Owner's manual

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MTI Instruments Accumeasure Digital Series LabVIEW Owner's manual

MTI Instruments Accumeasure Digital Series LabVIEW Owner's manual

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