Siemens Simatic Step7 Professional 2004, v5.3 
 
 
STEP 7 Professional is the programming and configuring software designed for professional 
use with SIMATIC controllers.
It supports the user through all the stages of a development process for automation solutions, 
such as Installation and management of projects
Configuring and parameter assignment of hardware and communications
Symbol management Program generation for SIMATIC S7 target systems
Loading programs on target systems Testing the automation plant
Plant fault diagnostics
STEP 7 Professional consists of the following:
The STEP 7 basic package including the well proven LAD, FBD and STL languages
S7-GRAPH for graphic programming of sequential controls
S7-SCL, the high-level language for programming even the most complex tasks
S7-PLCSIM for off-line simulation of an automation solution.
STEP 7 Professional includes all the programming languages complying with the international 
IEC 61131-3 standard and therefore enables cross-company standardization and helps save high 
software engineering overheads. STEP 7 Professional permits both programming of the PLC-based 
SIMATIC S7 and C7 controllers and the controllers for PC-based automation, SIMATIC WinAC. This 
gives the user freedom of choice when selecting a hardware platform and the opportunity to 
use hybrid software configurations.
STEP 7 Professional executes under the MS Windows 95/98/Me/NT 4.0/XP Professional operating 
systems and is adapted to the graphics and object-oriented functionality.
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