LabVIEW
refprop DLL 文件的调用 EXE文件和源码VI，一起分享一下。
Solved!
You'll need to get the Fortran source files for the DLL itself, and get them to recompile for your cRIO target as a shared library, unless you use an old Pharlap based cRIO. On Pharlap there is a small chance that the Windows DLLs would work, since the Pharlap OS uses the Win32 execution model. However it is more based on the original NT4 Win32 API than the more modern 2K, XP, Vista, etc API so unless the used Fortran compiler for the existing DLL is a fairly old one, the DLL may not be possible to load on Pharlap either.
The Linux .so shared library files that they show on the page as being available won't work even for the new NI Linux based cRIO systems, since that Linux shared library is certainly compiled for the x86 CPU, while the NI Linux targets use an ARM CPU.
Note: It seems you want to do this for a VxWorks cRIO. This might be a tough cookie to crack. While there is gfortran which is an optional part of gcc, it is probably not available for VxWorks out of the box and you might have to compile that first from sources for your VxWorks version. There is a somewhat higher chance that gfortran is already precompiled for the NI Linux realtime controller, but even that might not be easy. I would guess you are in for a complicated procedure to get this eventually working on cRIO.
A somehow less involved process (it only requires compiling C++ code into a .out library module to use on cRIO) would be maybe CoolProp. It's open source and has been specifically already compiled to support VxWork CompactRIO targets!
You might have to do some comparison to see if this project does your specific requirements but if it does, it's definitely much easier than getting the RefProp Fortran sources compiled to the cRIO VXWorks system.
