Technical data

Working Out the Automation Concept
3.6 Creating an I/O Diagram for the Valves
Programming with STEP 7
66 Manual, 05/2010, A5E02789666-01
3.6 Creating an I/O Diagram for the Valves
Each valve is controlled by its own "valve block" that is the same for all valves used. The logic
block has two inputs: one to open the valve and one to close the valve. It also has two outputs: one
to indicate that the valve is open and the other to indicate that it is closed.
The block has an in/out to activate the valve. It is used to control the valve but at the same time is
also edited and modified in the program for the "valve block."