METHOD FOR CONTROLLING COMMUNICATION OF FIELD BUS COMMUNICATION SYSTEM USING STANDARD LOCAL AREA NETWORK

摘要

PURPOSE: A method for controlling communication of a field bus communication system is provided to supply real-time communication services by using an open-type standard local area network(LAN) card as a communication network interface card instead of a field bus exclusive communication card, and by making a real-time communication protocol to mount the protocol on a standard LAN when the LAN is utilized in a control automation system, without subordinating the field bus communication system to a specific system provider. CONSTITUTION: Many nodes control corresponding control points in a plant control automation field bus communication system. A method for controlling communication of the field bus communication system comprises the steps of: classifying aperiodic data generated from the control points, by considering the aperiodic data as periodic data of specific unit periods or minimum sampling periods; classifying periodic data of various sampling periods generated from the control points, by considering the periodic data as the periodic data of the minimum sampling periods; binding the classified aperiodic data and the classified periodic data into one data block to group the data; and transmitting the data block to a period under the minimum sampling periods.