1
Download Measurement Studio LabWindows/CVI User Manual
Transcript
Chapter 3 Project Window – Utility Library (selected functions only; refer to the Utility Library Functions discussion later in this section) – ANSI C Library Your project also can link to the following libraries: – Analysis or Advanced Analysis Library – GPIB Library – VXI Library – VISA Library – IVI Library – Easy I/O for DAQ Library – Data Acquisition Library The following Utility Library functions are in instrsup.dll. – Beep – DateStr – Delay – SyncWait – Timer – TimeStr – RoundRealToNearestInteger – TruncateRealNumber – InStandaloneExecutable – CVIRTEHasBeenDetached instrsup.dll does not support the Standard Input/Output window. Functions such as FmtOut or ScanIn return errors when you use them with instrsup.dll. All the functions in instrsup.dll are multithread safe. • LabVIEW Real-Time Only—If you select LabVIEW Real-Time Only, cvi_lvrt.dll is installed instead of cvirte.dll or instrsup.dll. Use this option for DLLs that will be downloaded and run on the LabVIEW Real-Time hardware. cvi_lvrt.dll is a subset of instrsup.dll and has the following additional restrictions: – The RS-232 Library is not available. – The file I/O and console I/O functions in the ANSI C, Formatting and I/O, and Utility libraries are not supported and will return run-time errors. Some of the functions affected by this are printf, scanf, fprintf, fscanf, ScanIn, ScanFile, FmtOut, FmtFile, Beep, tmpfile, and tmpnam. © National Instruments Corporation 3-25 LabWindows/CVI User Manual
