Control and data transmission system, processing device and method for redundant process control with decentralized redundancy

摘要

To increase in system availability the invention provides for a control and data transmission system (10), which is at least one control device (100, 200) which in the normal operation, by way of a communication network (500) with at least one input and / or output device as a processing device (300, 400) is connected, wherein the processing device (300, 400) for detecting a control failure designed evaluation unit (310, 410), a in a memory (330, 430) of the processing device (300, 400), which can be parameterized not-control program stored, and a for carrying out the not-tax program a runtime system (320, 420), and wherein the processing device (300, 400) is designed for this purpose, in response to a by the evaluation unit (310, 410) detected control failure to change in an emergency operation, in which the processing device (300, 400) performs the not-control program.The present invention also provides a process device (300, 400) for use in such a control and data transmission system (10), as well as a process for the redundant process control before.