Siemens SIMATIC STEP 7 V5.2, Начало работы

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STEP 7 Getting Started
1-1
A5E00171228-01
1 Introduction to STEP 7
1.1 What You Will Learn
Using practical exercises, we will show you how easy it is to program in Ladder
Logic, Statement List, or Function Block Diagram with STEP 7.
Detailed instructions in the individual chapters will show you step-by-step the
many ways in which you can use STEP 7.
Creating a Program with Binary Logic
In Chapters 2 to 7, you will create a program with binary logic. Using the
programmed logic operations, you will address the inputs and outputs of your CPU
(if present).
The programming examples in the Getting Started manual are based, among other
things, on three fundamental binary logic operations.
The first binary logic operation, which you will program later on, is the AND
function. The AND function can be best illustrated in a circuit diagram using two
keys.
The second binary logic operation is the OR function. The OR function can also be
represented in a circuit diagram.
Key 1 Key 2
Key 3
If both Key 1 and Key 2
are pressed, the bulb
lights up.
Key 4
If either key 3 or key 4
is pressed, the bulb
lights up.