Unfortunately, there are no drivers listed for this instrument at http://ni.com/idnet. You may want to contact the manufacturer to see if they have a C driver for their instrument. If they do not, you can write your program with I/O Assitant, which makes it easier to parse instrument responses. Alternatively, you can hire an Alliance Member to write an driver for you. Alliance Member Directory http://www.ni.com/alliance/alliance_member.htm
Thanks for the response. I contacted CVI and they already provided me with a demo Labview driver. Similar driver is also included in CD that comes with monochromator. It is not convenient to integrate in another program, but it does contain all the monochromator functions and works well in terms of hardware response.