A technique is provided for communicating between networks and devices operating in accordance with different network protocols, and for performing logical operations on some or all of the data received and transmitted in accordance with either protocol. Where logic is enabled in a bridge/PLC, and where data is bound or affected by the logic, logical operations may be performed and data stored in a memory module or transmitted to one or another of the networks or devices in accordance with either protocol. Where data is not bound or logic is not enabled, the device may serve as a simple protocol bridge receiving input in one or both protocols, and producing output in accordance with either protocol.