The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2007
Filed:
Sep. 20, 2004
Peter Becker, Gaggenau, DE;
Peter Becker, Gaggenau, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and a system for monitoring and determining preceding states of at least one terminal of an automation system are provided. The automation system includes one or more terminals (), each of which can assume two or more states and each of which outputs a monitoring message that depends on the two or more states, and a control unit () that reads in the monitoring message from the one or more terminals (). Each of the one or more terminals () outputs another monitoring message only after it has received an acknowledgment signal (Q) from the control unit (). In order to be able, even subsequently, to reconstruct at least some of the preceding state changes, the monitoring message contains, in addition to each state value, at least one additional component (S_Z, S_Z; S_OV, S_OV) whose value is changed during a transition of the state value and which is reset to an initial value when a monitoring message is output.