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- High-availability automation system with redundant design.
- For applications with high fail-safety requirements:
Processes with high restart costs, expensive downtimes, little supervision, and few maintenance options. - Redundant central functions.
- Increases availability of I/O: switched I/O configuration.
- Also possible to use I/Os with standard availability: single-sided configuration.
- Hot standby: automatic reaction-free switching to the standby unit in the event of a fault.
- Configuration with two separate or one divided central rack.
- Connection of switched I/O via redundant PROFIBUS DP and/or PROFINET.
Catalog ST 70:You can also find information about SIMATIC S7-400 in the Catalog ST 70: http://www.automation.siemens.com/salesmaterial-as/catalog/en/simatic-st70-chap06-english-2015.pdf
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