Registers – Transfer mechanism – Traveling pawl
Patent
1976-04-09
1977-09-06
Ruggiero, Joseph F.
Registers
Transfer mechanism
Traveling pawl
318562, 364900, G06F 1546, G08C 1500
Patent
active
040470032
ABSTRACT:
A plurality of multi-functioning machines are simultaneously controlled by similar transmitter/receiver pairs, one of which is associated with a programmable controller and the other of which is associated with a machine. In the controller terminal, each transmitter of one such pair transmits a series of groups of serial command signals while its receiver receives corresponding groups of serial condition-responsive signals from the machine which update the controller. In the machine terminal, the transmitter of the other pair is connected to the controller receiver and the receiver is connected to the controller transmitter. Each transmitter derives input from a multiplexing matrix and each receiver outputs its information through a demultiplexer matrix. Each transmitter/receiver pair is driven by a free-running clock but the pair associated with the machine is slaved to the controller transmitter. Provision is made for connecting a series of machine pairs to a single controller pair, and data transfer between transmitter/receiver pairs is blocked upon detection of transmission breakdown.
REFERENCES:
patent: 3559256 (1971-02-01), Lemelson
patent: 3576540 (1971-04-01), Fair et al.
patent: 3626385 (1971-12-01), Bouman
patent: 3636525 (1972-01-01), Inaba et al.
patent: 3641326 (1972-02-01), Harte
LaRocca James J.
Mazur Richard A.
Continental Can Company Inc.
Ruggiero Joseph F.
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