Patent ID: 7756917
Filing Date: 2010-07-13
Classification: H04L,Y04S

Abstract:
1. A system including a controller for controlling and monitoring a base module and a plurality of remote equipment modules, the base module further comprising a power source capable of powering each remote equipment module, the equipment environment further includes a first electrical wire and a second electrical wire forming a two wire bus wherein said base module and each said remote equipment module are electrically attached to said two wire bus, the controller comprising: a switch means capable of being either off or on, wherein when on, full power is applied to the first and second electrical wires, wherein when off, power on the first and second electrical wire is current limited, thereby allowing bidirectional low power data transfer along said two wire bus, wherein each remote equipment module receives operating power from said base module over the two wire bus only when switch means is on, wherein said controller is enabled to transfer data between said base module and each said remote equipment module on said first and second electrical wires when said first and second electrical wires are current limited, using a low power communications protocol the communications protocol deploys a two wire communications cycle, the communication cycle further comprises: