DefinePK

Abstract

Modbus is a common industrial field control bus protocol which is not only used in a wide variety of industrial applicationslike SCADA systems but also commonly used in building management systems(BMS) across the globe.Buildings generally useBTU,Water,Energy meters that operate on M-bus standard.M-bus devices cannot communicate directly with a Modbus basedBuilding Management System(BMS).The network level incompatibility of a M-bus device to communicate with a Modbusmaster can be overcome by using a protocol conversion device having low conversion delay time and suitable voltageadjustment circuits.My project will focus on building a protocol conversion gateway for the M-bus slaves to communicate with aModbus based master with minimum time delay using RS232 based serial medium for communication.