Step 7 Lite

[christiank]

Hie there.I am new to Step 7 Lite and I have two questions.
1.What purpose is served by instance DBs linked to FBs?
2.The manual I have does not give details on the components of the PID controller.Anyone with details on the PID controller?

 

[Schtiel]

1.What purpose is served by instance DBs linked to FBs?

DB is a memory for variables that are used in your FB.

2.The manual I have does not give details on the components of the PID controller.Anyone with details on the PID controller?

http://www2.sea.siemens.com/Product...tware/Engineering-Software-STEP-7-Manuals.htm

 

[christiank]

Thanks man.Hope to talk to you more.