Siemens SIMATIC S7-400 Configuration And Use Manual page 52

Technological Functions of the S7-400
Advantages
The realization of technological functions using function modules offers the
following advantages:
• Tasks do not depend on the CPU and are therefore processed independent of
the cycle time.
• Economic solutions
• Uniform configuration of all function modules using STEP 7 reduces
engineering costs
• Easy, convenient operation due to common data storage
4-4
Automation System S7-400 Configuration and Use
A5E00442711-02