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Contents
NI-488.2 User Manual vi ni.com
Chapter 3
GPIB Explorer (Mac OS X and Linux)
Starting GPIB Explorer .................................................................................................3-2
Mac OS X........................................................................................................3-2
Linux...............................................................................................................3-3
Add a New GPIB Interface............................................................................................3-4
Delete a GPIB Interface.................................................................................................3-5
View NI-488.2 Software Version..................................................................................3-5
View or Change GPIB Interface Settings......................................................................3-6
Access Additional Help and Resources.........................................................................3-8
NI-488.2 Online Help .....................................................................................3-8
National Instruments GPIB Web Site.............................................................3-8
View or Change GPIB-ENET/100 Network Settings ...................................................3-8
Device Configuration......................................................................................3-9
Update GPIB-ENET/100 Firmware................................................................3-9
Chapter 4
Developing Your NI-488.2 Application
Interactive Instrument Control ...................................................................................... 4-1
Choosing Your Programming Methodology.................................................................4-2
Choosing a Method to Access the NI-488.2 Driver........................................4-2
Choosing How to Use the NI-488.2 API ........................................................ 4-3
Communicating with a Single GPIB Device....................................4-3
Using Multiple Interfaces and/or Multiple Devices ......................... 4-4
Checking Status with Global Variables.........................................................................4-4
Status Word (ibsta)..........................................................................................4-5
Error Variable (iberr) ......................................................................................4-6
Count Variables (ibcnt and ibcntl)..................................................................4-6
Using Interactive Control to Communicate with Devices.............................................4-7
Programming Models.................................................................................................... 4-7
Applications That Communicate with a Single GPIB Device........................ 4-7
Items to Include ................................................................................4-7
General Program Steps and Examples..............................................4-8
Applications That Use Multiple Interfaces or Communicate
with Multiple GPIB Devices........................................................................4-9
Items to Include ................................................................................4-9
General Program Steps and Examples..............................................4-9
Language-Specific Programming Instructions for Windows........................................4-11
Microsoft Visual C/C++ (Version 2.0 or Later) .............................................4-11
Borland C/C++ (Version 4.0 or Later)............................................................4-12
Visual Basic (Version 4.0 or Later)................................................................4-12