Ease in modification of logic, reduced size, means of remotecommunications and advances in the technology like OPC Server, Modbus-RTU/ Modbus tcp/ Profinet .etc have made PLC Automation ControlPanels an edge over conventional relay based systems.
Control Systems Engineershas provided PLC based Panels from PLC of Allen Bradley, Siemens, SCHNEIDER, Modicon, GEFanuc, Mitsubishi From small I/O application to the complex I/O systems are provided bythe Control Systems Engineers. Control Systems Engineers have developedcommunication software's for remote communication of the PLC Panels in variousdifferent protocols. With PLC based Panels HMI/SCADA are provided to provide theoperator various messages and controls of the process plants touch screen MMIC are provided. To effective control of the system