Distributed industrial control system with remote stations takin

Details Distributed industrial control system with remote stations takin Distributed industrial control system with remote stations takin

1981-06-26

1983-10-18

Malzahn, David H.

Excavating

364200, 370 85, G06F 1116

Patent

active

044109830

ABSTRACT:
A control system for controlling an industrial process includes a plurality of remotely located process control units (remotes) each coupled to an associated input/output device(s) and adapted to communicate with one another through a dual channel communications link. Each remote has a unique succession number within a predetermined succession order with supervisory communication-control of the communication link sequentially transferred to each remote according to its succession number to provide a revolving or master for the moment control of the system. Each remote after completing its turn as master transmits a control block to the next remote in the sequence. Each remote, when exercising supervisory communication control of the communication link, may transmit data in block form to other remotes and request and receive data back from other remotes. Each remote upon completing its turn transmits a control block to the next remote in the sequence, which, upon receiving the control block, tests for validity and, if valid, transmits an acknowledgement signal to the remote which transmitted the control block. The next remote then takes its turn exercising supervisory control over the communications link and, in the same manner, the supervisory control is transferred from one remote to the next in the sequence.

REFERENCES:
patent: 2512038 (1950-06-01), Potts
patent: 2997540 (1961-08-01), Ertman et al.
patent: 3195107 (1965-07-01), Rudolph
patent: 3665395 (1972-05-01), Bochmann
patent: 3699529 (1972-10-01), Beyers
patent: 3754211 (1973-08-01), Rocher et al.
patent: 3772649 (1973-11-01), Haselwood et al.
patent: 3806885 (1974-04-01), Moore
patent: 3932841 (1976-01-01), Deerfield et al.
patent: 4058681 (1977-11-01), Imaizumi
patent: 4082922 (1978-04-01), Chu
patent: 4136384 (1979-01-01), Okada et al.
patent: 4159470 (1979-06-01), Strojny et al.
patent: 4186380 (1980-01-01), Edwin et al.
patent: 4209840 (1980-06-01), Berardi et al.
patent: 4242749 (1980-12-01), Takezoe
patent: 4271505 (1981-06-01), Menot et al.
patent: 4281380 (1981-07-01), DeMesa et al.
patent: 4304001 (1981-12-01), Cope
patent: 4320502 (1982-03-01), DeVeer

Affiliated with

Also associated with

Rating

Distributed industrial control system with remote stations takin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distributed industrial control system with remote stations takin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed industrial control system with remote stations takin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1293204