Delta VFD-B Modbus with QtDragon_hd

Hello, 
i would like to run delta vfd-b over rs485 modbus and integrate with qtdragon hd GUI, can somebody please point me in the right direction i am completely new to linuxcnc, 

thanks 

I would consider integrating a drive using RS485 a more advanced subject.

Start with reading the Linuxcnc documentation, and begin with a basic configuration for running your machine without spindle control. Then after you have a better handle on Linuxcnc, and the basics of Hal programming, try to integrate the modbus spindle control into your configuration. There may be an existing modbus driver compatible with your drive. (I don't know, never used one.) If so that would probably make integrating RS485 control much simpler. But if not you can always make the generic Mb2hal driver work, but this is a bit of a chore to set up and configure. (I have done this before.) The generic RS485 drivers are a lot of work to set up because you must research all of your drive's modbus settings and communication parameters, and every drive (even different models from the same manufacturer can) have different parameter arrangement, there is no "standard" way drives do modbus.

thank you,

you are right, i think there is already a driver available for my vfd, after some googling around i found this,
github.com/araisrobo/linuxcnc/tree/maste.../user_comps/vfdb_vfd

linuxcnc.org/docs/2.7/html/man/man1/vfdb_vfd.1.html

i managed to make it work, but having a weird issue, 1000 speed command is almost giving me a 10krpm, 
what could be the issue here ? i am manually testing it with hall show, 

i have attached my vfd hal and ini files, for testing with hall show i # all nets