Patent Number: 6,169,928

Title: Apparatus and method for sharing data among a plurality of control devices on a communications network

Abstract: A networked system is provided for connecting a plurality of programmable logic controllers together in a manner which more efficiently uses available network bandwidth. The network includes a producer controller and at least one consumer controller. The producer controller shares a portion of its internal memory with other consumer controllers on the network. In this manner, a data sample is sent from the producer controller to one or more consumer controllers. The consumer controllers check to determine if data samples are lost during transmission over the network and initiate responsive corrective action.

Inventors: Olson; Ronald Wayne (Charlottesville, VA), Cinalli; Anthony Joseph (Charlottesville, VA), Spencer; Andrew Edward (Roanoke, VA)

Assignee: GE Fanuc Automation North America, Inc.

International Classification: G05B 19/04 (20060101); G05B 19/042 (20060101); H04L 29/06 (20060101); H04L 1/18 (20060101); H04L 1/16 (20060101); H04L 29/08 (20060101); G05B 019/18 ()

Expiration Date: 01/02/2018