Siemens S7-300 Programming

Hi,

I am trying to work out some thing with Siemens S-7 Software, Can any body help me with the basic logics & communication setup.

Hello bhaskar;
Welcome to the forum.
Many here are able to help you, but your question is much too general for an adequate answer. The best you could hope for is a link to Siemens manuals and suggestions to read up on the subject.
So here is mine: a webpage of tutorials on S7-300 basic programming from Siemens. These should show you quckly enough the fundamentals of Step 7 (hardware configuration, programming in Ladder, downloading, monitoring and testing our programs, communications on Profibus and Industrial Ethernet...
http://www.automation.siemens.com/fea/html_76/down_module.htm

If you have more specific problems in mind, please do not hesitate to bring it up on the main forum page.
Hope this helps,
Daniel Chartier