Patent · US Active

Common transmission protocol system for an automation device

US7447552B2 · kind B2 · utility

5Cited by

4References

1Claims

0Family size

Assignee

ABB PATENT GMBH · DE

Inventors

Heiko Kresse · Bad Eilsen, DE
Andreas Stelter · Minden, DE
Ralf Schaeffer · Hille, DE

Key dates

Filing date	Sep 7, 2006
Grant date	Nov 4, 2008
Priority date	—
Expiry date	Mar 28, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/25257
WIPO fieldControl
WIPO sectorInstruments

Abstract

An automation device is disclosed, in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (110), which has a group of associated input/output connections which are connected to a resistor network. The resistances of the resistors follow a sequence, the resistance respectively being doubled from the less significant to the next most significant bit. Each input/output connection is actively switched to the associated logic level in order to output a first logic state and is connected as a high-impedance input in order to output the inverse, second logic state.

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