Machine building
Power generation and distribution.
Petrochemicals and chemical enterprise.
Oil, gasoline.
Car enterprise( Eg. meeting lines)
Pharmaceuticals
Refineries
Paper and printing enterprise.
Meals and drinks enterprise.
Woodworking
Airport automation
Warehousing technology.
Steel industry.
Shipbuilding
Site visitors glide automation.
Turbine improvement.
Shipping era.
Manner engineering, e.g., water deliver, wastewater remedy.
Strength era and distribution and extra.
Instrumentation and manipulate.
Waterworks and water treatment plant.
Packaging machinery.
An s7-400 structure is composed essentially of a power supply, a backplane and a CPU. the system is modular and may be set up effortlessly without the need to study slot rules. the s7-400 is characterized through rugged fan-free operation with warm swapping of signal modules.
A numerous range of modules may be used each for centralized expansions and for easy setup of allotted structures with the ET 200; this consequences in extraordinarily low-value spare components inventory.
The S7-400 CPUs have some highly useful special functions :-
Elective knowledge protection by means of analyzing the serial wide variety of the memory card, so that it's far ensured that this system runs handiest with the specific reminiscence card.
Less difficult and quicker improve due to firmware replace thru network from an engineering computer
Additional write-safety (for e.g., no factor downloads from PC to CPU) thru a gadget characteristic