ktp700 basic with profibus dp +S71241 CPU+CM1243-5

Gentlemen,

I'm new to Siemens and now working on a project for my client. I have a S7 1241 cpu,  CM1243-5 com module, a KTP700 hmi prifibus dp.

The hmi is connected to the CM1243-5 via profibus cable.

My problem: I'm not able to detect the hmi. My plc is connected to my router and I'm able to get online with it. 

I've attached some diagrams..just in case.

Appreciate any help.

thanks,

Moorthy.