Patent ID: 6914914
Filing Date: 2005-07-05
Classification: G05B,H04J

Abstract:
1. A time synchronization system for an industrial control system, comprising: a synchronization network providing a communications channel for transferring synchronization information between first and second controllers in the control system, at least one of the first and second controllers comprises a control chassis with a control module therein; and first and second synchronization components operatively associated with the first and second controllers, respectively, and having synchronization interfaces in electrical communication with the synchronization network for transferring the synchronization information between the first and second synchronization components via the synchronization network; the first and second synchronization components cooperatively exchange the synchronization information with each other and provide the synchronization information to the first and second controllers, respectively, whereby the first and second controllers operate in temporal synchronization; at least one of the first and second synchronization components comprises a synchronization module located in the control chassis, the synchronization module provides the synchronization information from the synchronization network to other modules in the control chassis, whereby the other modules in the control chassis and the other of the first and second controllers operate in temporal synchronization.