I have set all the parameters as per manual for Modbus operation at 9600bps 8n1.

I am unable to start the drive I am sending the following frame to start the drive:

Address of Drive 2
Function 5
Coil 6
Data 1

Can someone help me, Danfoss service Engineer has refused to help since I have not purchased the drive from their Official System House...
I had the same expirence with their engg , actually they dont know most of the functionalities , we still get stupid answers from them.

Would suggest you to write to Danfoss Denmark , they are quick and will give you proper solutions