Field bus system and virtual field apparatus

Details Field bus system and virtual field apparatus Field bus system and virtual field apparatus

1995-01-06

1998-02-10

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082554, 34037016, G05B 2302

Patent

active

057173850

ABSTRACT:
In a system for performing signal transmission, through a field bus, between field devices and higher-rank apparatuses connected on a transmission line, the field devices are of the analog signal type. A substitution device is provided between the analog type field devices and the field bus. The substitution device acts to perform communication on the field bus as a substitute for the field devices. By the substitution device, the field devices can be gradually changed to those adapted to the field bus as occasion demands, so that an existing system can be transformed step by step into a field bus system.

REFERENCES:
patent: 3827029 (1974-07-01), Schlotterer et al.
patent: 4841296 (1989-06-01), Kadoya et al.
patent: 4989671 (1991-02-01), Lamp
patent: 5063371 (1991-11-01), Oyer et al.
patent: 5153462 (1992-10-01), Agrawal et al.

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