Siemens SIMATIC S7-300 Quick Start Manual page 65

How Do You Download the User Program to Your S7-300?
Prerequisites
The following prerequisites must be fulfilled before you can download the
user program to your S7-300:
What to Load, and To test individual blocks, you must always load OB1 with all the blocks
Order of Calls
called in it. These blocks must be in reverse call order.
How Do You The table below shows you the procedure for downloading your user
Proceed?
program:
Step
Select FC1 and OB1 in the project window of
the SIMATIC Manager (offline view) in the
1. "Blocks" container while holding the SHIFT key
down, and select the menu command PLC
Download.
Select the menu command View
open the containers of the TLIGHT project up to
"S7 Program" (online). Change the operating
mode of the CPU with the menu command PLC
2.
Operating Mode...
Click on "Complete Restart" in the dialog box
which then appears, and then on "OK" and
"Close".
Primer: S7-300 Programmable Controller, Quick Start
C79000-G7076-C500-01
Downloading and Testing Your User Program
There must be an online connection between your programming device
and your S7-300.
The program to be downloaded must have been compiled without errors.
The CPU of your S7-300 must be in the STOP state.
For the TLIGHT sample
program, download the FC1 you
have created and the OB1 to your
CPU.
Procedure
Online and
Result
Both blocks are downloaded to the CPU of your
S7-300.
The CPU goes to RUN via complete restart.
The TLIGHT sample program you have created
will now be executed cyclically.
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