S7-400 CPU

There is a graded range of CPUs from the entry-level CPU right up to the high-performance CPU for configuring the controller. All CPUs control large quantity structures; several CPUs can work together in a multi-computing configuration to boost performance. Thanks to their high processing speed and deterministic response times, the CPUs enable short machine cycle times.

The different CPUs are distinguished by, for example, work memory; address range, number of connections and execution time. As well as the standard CPUs, there are also two failsafe and three fault-tolerant CPUs available.

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Description

Applications
The S7-400 is especially suitable for data-intensive tasks in the process industry. High processing speeds and deterministic response times guarantee short machine cycle times on high-speed machines in the manufacturing industry.

 

Benefit

  • Modularity – This permits, for example, the division into one communications line for HMI and programming tasks, one line for high-performance and equidistant motion control components, and one “normal” I/O Fieldbus.
  • Multi-computing – that is, the simultaneous operation of several CPUs in one S7-400 central controllers: For example, complex tasks in technologies such as open-loop control, computing or communication can be split and assigned to different CPUs. Each CPU is assigned its own, local I/O for this purpose.
  • Special functions– The S7-400 CPUs have some highly useful special functions:
    • An integrated data record gateway permits integrated access to data records across different bus systems and network boundaries e.g. a control-level PC can communicate via PROFINET with a lower-level S7-400 controller and the field devices connected to it via PROFIBUS.

You can also find information about SIMATIC ET200 in the Catalog ST 70:

http://www.automation.siemens.com/salesmaterial-as/catalog/en/simatic-st70-complete-english-2015.pdf

Brochure information material for downloading can be found in the Internet:

http://w3app.siemens.com/mcms/infocenter/content/en/Pages/order_form.aspx?nodeKey=key_518693&infotype=brochures

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