Patent · US Active

Method for securing the exchange of data between an external access unit and field device

US8745692B2 · kind B2 · utility

0Cited by

19References

22Claims

0Family size

Assignee

Endress+Hauser Process Solutions AG · CH

Inventors

Udo Grittke · Steinen, DE
Christian Seiler · Auggen, DE

Key dates

Filing date	Sep 11, 2002
Grant date	Jun 3, 2014
Priority date	—
Expiry date	Jan 31, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/102
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for safe data communication via WAN, LAN (e.g. Internet) between at least one external access unit and a field device, or a field bus adapter for determining or monitoring at least one physical or chemical process parameter. According to the method unauthorized accessing of a field device, or a field bus adapter, in the field is blocked in that the operator of the field device or the field bus adapter permits the external access unit to have targeted access to the field device, or the field bus adapter.

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