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Primer: S7-300 Programmable Controller, Quick Start
C79000-G7076-C500-01
The table below shows you the STEP 7 objects that you should know for the
TLIGHT programming example.
You can see from the table which symbols are assigned to the individual
objects and what they mean:
Symbol Object Description In Container
Project Represents the entirety of all data and
programs of an automation solution
Lies at the top of an object
hierarchy
SIMATIC 300 station Represents a hardware installation with
one or more programmable modules
Project
Programmable module Represents a programmable module
(CPU)
Station
S7 program Consists of the “Blocks” and “Source
Files” containers and the “Symbols”
object
Programmable module or
project
Blocks Contains the blocks in your user program S7 program
Block (offline)
Block (online)
Can be, for example:
S Logic blocks (OBs and FCs)
Blocks
You create objects such as projects via the menu command File → New....
These objects can in turn contain other objects, such as programs and blocks.
You can assign these via commands in the Insert menu. Blocks contain no
further objects. Opening a block starts the assigned editor with which you can
then edit the contents of the block.
You can change the representation of objects and set the object properties in
various dialog boxes.
Introduction
Creating Objects
Representing
Objects
Working with the STEP 7 Programming Software
Which STEP 7 Objects Should You Know?
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