Fundamentals Of Creating A Plc User Program - Siemens SINUMERIK 840D sl Commissioning Manual

15.4.1

Fundamentals of creating a PLC user program

Introduction
The following points must be observed when creating a PLC user program:
● Software and hardware prerequisites
● Installing the toolbox (PLC basic program, slave OEM, GSD files)
● Editing the blocks in the PLC basic program
Software and hardware prerequisites
● SIMATIC STEP 7 as from Version 5.3, Service Pack 2
● SIMATIC STEP 7 is installed on the PG/PC
Installing the PLC basic program library
To be able to use the blocks of the basic PLC program (OBs, FBs, DBs, etc.) in a SIMATIC
S7 project, the library must first be installed in the SIMATIC manager.
Editing the blocks in the PLC basic program
The individual blocks in the basic PLC program can be processed as follows in the SIMATIC
manager:
● Select the appropriate block, e.g. OB 100 in the folder Blocks of the corresponding
● Use the menu command Edit > Open Object to open the block or double-click the block
● Edit the block using the LAD/STL/CSF editor. Switch over to the block display using the
See also
Creating a PLC program (Page 51)
IBN CNC: NCK, PLC, drive
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
Module
with the left mouse button
menu command View > LAD or STL or CSF
Fundamentals
15.4 PLC program
309