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Chapter 3 Developing Your Application
© National Instruments Corp. 3-7 NI-488.2 User Manual for Windows
NI-488 Program Shell
Figure 3-1 is a flowchart of the steps to create your application program using device-
level NI-488 functions.
No
Yes
No
No
Closed All
Devices?
Yes
START
Make a Device-Level Call
• Send Data to Device
• Receive Data from Device
• Clear Device
• Serial Poll Device
and so on
(ibwrt)
(ibrd)
(ibclr)
(ibrsp)
Finished GPIB
Programming?
Close Device
(ibonl)
END
Yes
Are All
Devices
Open?
Open Device
(ibdev)
Figure 3-1. General Program Shell Using NI-488 Device Functions