Patent · US Expired

Bus system for a printing machine

US5730053A · kind A · utility

2Cited by

1References

2Claims

0Family size

Assignee

MAN Roland Druckmaschinen AG · DE

Inventors

Johannes Tenflede · Rodgau, DE
Michael Dotzert · Friedrichsdorf, DE
Gerold Wende · Frankfurt am Main, DE

Key dates

Filing date	Feb 21, 1996
Grant date	Mar 24, 1998
Priority date	—
Expiry date	Feb 21, 2016

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F33/0009
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A bus system for a printing machine, in particular a sheet-fed offset printing machine, which includes a plurality of stations designed as computers, which are connected to one another via a bus. In the bus, it is intended that potential errors which occur at unforeseeable times can be detected, without it being necessary to intervene in the line system of the bus. According to the invention, this is achieved in that at least one of the stations has a bus coupler whose transmitting portion is designed for the purpose of outputting bus signals for the purpose of establishing a connection to the other stations, the value of at least one physical variable differing from the value of this variable provided in the line protocol. In the case of a bus designed as an optical waveguide, this is advantageously achieved by one station carrying out the attempt to establish a connection initially at a low transmitted power.

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