Patent ID: 6917167
Filing Date: 2005-07-12
Classification: G05B,H05B

Abstract:
1. A tracking system for an arrangement comprising controlled devices that can have more than one state and device operators therefor, the system comprising: at least one device operator of a first type that is capable of setting a plurality of sequence steps for a corresponding controlled device, in which each step represents a given state of the controlled device and in which the sequence steps normally follow one another in a prescribed order; a sequencer associated with the at least one device operator of the first type that operates to normally cause the steps to follow one another through the sequence steps; at least one other device operator operable to cause the corresponding controlled device to assume a preset state different than that previously set by the device operator of the first type; and a tracking sensor that senses changes in the state of the controlled device due to activation of the other device operator and which conforms the state of the sequencer to track the current state of the controlled device, so that a subsequent actuation of the device operator of the first type will cause the controlled device to assume the next state in the prescribed order.