Patent · US Active

Method and apparatus for bus coupling of safety-relevant processes

US8576707B2 · kind B2 · utility

0Cited by

6References

19Claims

0Family size

Assignee

PHOENIX CONTACT GMBH & CO. KG · DE

Inventors

Heinz-Carsten Landwehr · Lemgo, DE
Viktor Oster · Blomberg, DE
Rainer Esch · Blomberg, DE

Key dates

Filing date	Aug 17, 2005
Grant date	Nov 5, 2013
Priority date	—
Expiry date	Aug 5, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L69/18
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and an apparatus are provided, which provide for single-channel bus coupling of safety-relevant processes. The method is distinguished in that a data record which is relevant for the safety-critical process is processed via at least two redundant processing channels, in particular on a protocol-specific basis, in accordance with identical laws for in each case one safe protocol and the redundant safety messages for single-channel bus coupling are joined together to form a common safe protocol, to be precise in that each of the processing channels accesses a common buffer register, with write authorization for each register location being allocated only once, in such a way that the common safe protocol is joined together in components by in each case writing in different components of the respective safety messages.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.