HP Drive manual Chapter Using IVI with Visual Basic, Environment

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Chapter 9

Using IVI with Visual Basic 6.0

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The Environment

Visual Basic 6.0 is a programming environment derived from Basic and developed by Microsoft for the Windows operating system. Software vendors and developers use VB to create applications quickly by writing code to accompany on-screen objects such as buttons, windows, and dialog boxes.

This chapter focuses on VB 6.0, which is not the most current version. If you are new to VB, we recommend you refer to Chapter 3, Using IVI with C# and Visual Basic .NET.

Example Requirements

Visual Basic 6.0

Microsoft Visual Studio 6.0

Agilent 34401A IVI-COM, Version 1.1.0.11, March 2006 (from Agilent Technologies)

Agilent IO Libraries Suite 14.2

Download and Install the Driver

If you have not already installed the driver, go to the vendor Web site and follow the instructions to download and install it. You can also refer to Chapter 1, Download and Install IVI Drivers, for instructions.

This example uses an IVI-COM driver. IVI-COM is the preferred driver for Visual Basic 6.0, but IVI-C is also supported via the inclusion of .bas files.

Create a New Project and Reference the Driver

To use an IVI Driver in a Visual Basic program, you must first create a project and add a reference to the driver.

1Launch Visual Basic and create a new project using Standard EXE project. Note: This creates a Windows Application program.

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Contents Getting Started Guide Page Contents Using IVI with LabVIEW Using IVI with Visual C# and Visual Basic .NETUsing IVI with LabWindows/CVI Using IVI with Measure Foundry Using IVI with MatlabUsing IVI with Paws Using IVI with Agilent VEE Pro Using IVI with Visual Basic 6.0Advanced Topics Chapter Introduction Why Use an Instrument Driver?Purpose Why IVI? Class IVI Driver Why Use an IVI Driver? Flavors of IVI Drivers Download and Install IVI DriversShared Components Examples Familiarizing Yourself with the DriverIntroduction Chapter Download and Install the Driver Chapter Using IVI with Visual C++Using IVI-COM in C++ Environment\Program Files\Ivi\Bin Create a New Project and Import the Driver Type LibrariesUsing IVI with Visual C++ Set the Trigger Delay Configure the InstrumentDmm-ConfigureIviDmmFunctionDCVolts, 1.5 Dmm-Trigger-Delay =Error Checking Set the Reading Timeout/Display the ReadingClose the Session Build and Run the Application Using IVI-C in Visual C++Exit1 IAgilent34401Ptr dmmuuidofAgilent34401 try \Program Files\IVI\include \Program Files\IVI\Lib\msc$VXIPNPPATHWinNT\include Chapter Error = Define Error CheckingGoto Error else error = error #endif #ifndef checkErr #define checkErrfCallCheckErr hp34401aRead session, 1000, &reading Set the Trigger and Trigger DelayIf session Hp34401aClosesession Build and Run the Application Further Information Chapter Using IVI with Visual C# Visual Basic .NET Create a New Project and Reference the Driver Create an Instance of the Driver Using Agilent.Agilent34401.InteropType dmm.Initialize GPIB23, false, true, simulate=true Dmm.Trigger.Delay = Dmm.DCVoltage.Configure1.5Type double reading Dmm.CloseAgilent34401Class dmm = new Agilent34401Class TipsConsole.WriteLineThe reading is 0, reading Console.ReadLine Imports Agilent.Agilent34401.InteropOption Explicit On Chapter Using IVI-C Chapter Using IVI with LabVIEWTMCreate a Project and Access the Driver Using IVI with LabVIEW Take the Reading Display the Reading Add Error CheckingRun the Application Using IVI-COM Setting a Property in an IVI-C DriverUsing IVI with LabVIEW Initialize the Instrument Configure the Instrument Close the Driver and Automation Sessions Run the Application Chapter Create a New Project and Add Instrument Driver Files Chapter Using IVI with LabWindowsTM/CVITM#include hp34401a.h Using IVI with LabWindowsTM/CVITM Configure the Instrument Set the Reading Timeout GPIB023INSTR, Vifalse Printf %f, reading Chapter Development Environment Chapter Using IVI with MatlabTopics Configure the IVI DriverUsing IVI with Matlab DMM in the Driver session field Generate an Instrument Wrapper Configure and Control the InstrumentCreate an Instance of the Instrument Connect to the InstrumentDisplay Reading Set Reading TimeoutDisconnect from the Instrument Remove the Driver from MemoryMatlab is a registered trademark of The MathWorks, Inc Chapter Chapter Using IVI with Measure Foundry Data Source Using IVI with Measure Foundry Control Source Using IVI with Measure Foundry Compile and Run Data SinkClose Session Using IVI with Measure Foundry Chapter Chapter Using IVI with Paws Prepare the Paws Environment CNX HI X20-2 LO NOM 0 V UL 0.5 V LL -0.5VDC $ Cnx hi DMM-Hi, lo DMM-LoAdd the Wcem Interface Functions Connect to the IVI-COM Driver Extern Hresult hr #include DMM.h Extern CComPtrIAgilent34401 driver#include DMM.h Hr = driver-getDCVoltage&pDMMDCVolt Variantfalse VarianttrueHr = pDMMTrig-ConfigureAgilent34401TriggerSourceImmediate Display\0333041m Bad return from Close method\033m\n Build the Project IEEE-488 Bus Configuration File ChannelPrepare the Run-Time System Environment MLALoad and Run the Project Chapter Chapter Using IVI with Visual Basic Add a Button Dim dmm As New Agilent33401 Option ExplicitType 1.5 Type dmm.Close Type dmm.Trigger.Delay =Tips Further Information Chapter Launch the Instrument Manager and Select the Driver Chapter Using IVI with Agilent VEE ProChapter Using IVI with Agilent VEE Pro Initialize the Instrument Configure the Instrument Tips Another Method to Display the Reading Further Information Chapter IVI Architecture Chapter Advanced TopicsDriver API Driver Types Advanced Topics Interchangeability Instrument I/OAdvanced Topics IVI Configuration Store Advanced Topics Chapter IIviSessionFactory factory = new IviSessionFactoryClass IVI-COMString identifier = driver.Identity.Identifier Driver.InitializelogicalName, true, trueConsole.WriteLineIdentifier 0, identifier IIviDmm dmm = IIviDmmfactory.CreateDriverlogicalNameIVI-C Future Development Editing the Configuration StoreIVI Drivers in Action Advanced Topics Chapter

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