Can u suggest me some resources, which may b helpful for learning ladder logic ? In which software i will write the ladder logic code/diagram ?
I found software named Seimens Logo and Siemens Simatic in their web. are the simulator for practicing ?
Simatic doesn't mean simulator. It is just the name of their software.
Siemens is different than other programs so if you can learn on siemens software it would be good. The most common software is Siemens Step-7.
If you search for Siemens here there are lots of posts.
The problem is that I don't think most of the software can be simulated without having a PLC to test with.
You will have to get a copy of a simulator.
For basic ladder logic (which you still have to learn first) you can probably google for PLC Ladder Logic simulation. I don't know of anything off hand that you can use.
Sorry I can't be more helpful. Good luck, ladder logic is fun, useful, but also frustrating at times!