This is a very good and most sought after book in the field of PLCs by Siemens. The book A task-oriented guide to configuring, programming, deploying, troubleshooting, and maintaining S7-300/S7-400 PLCs and Simatic Networks.
This book consists of 7 chapters (7 Steps):
+ Step 1: Getting Started with STEP 7
+ Step 2: Working with Projects and Libraries
+ Step 3: Working with Hardware Configurations
+ Step 4: Working with Programs and Data
+ Step 5: Managing Online Interactions with the CPU
+ Step 6: Working with Monitoring and Diagnostic Tools
+ Step 7: Working with Simatic Network Configurations
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