VFD communication Modbus RTU by RS-485

Hey Guys,

I am relatively new to labview and am having trouble controlling a teco westinghouse VFD (A-510).

I have a labview code that generates the apparent RTU command that should be send out to the VFD but I am unsure if the serial write of the VIs are correct.

http://www.tecowestinghouse.ca/controls/drives/a510/

As a sanity check for an 1800RPM (60Hz) input, the command should match the attached image.

I am thinking that there is an error in how i set up my VISA serial communication. Should i be using the Modbus pallette instead ? 

Thanks in advance!