Distributed controllers

The decentralization of intelligence helps hugely in making machines and plants more flexible and is thus becoming a decisive competitive factor. Increasing networking makes it possible to integrate autonomous, intelligent units at the field level into the system-wide communication system. The SIMATIC ET 200 I/O system can be expanded using integral, intelligent controllers. This gives rise to distributed controllers.

Catalog ST 70:

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

http://www.automation.siemens.com/salesmaterial-as/catalog/en/simatic-st70-chap07-english-2015.pdf