A Data Sharing Scheme among Industrial Process Controllers Based on UDP

Abstract

Abstract-With the development of industrial process control, more and more data need to be exchanged among industrial process controllers. Based on analysis of advantages & shortcomings of existing data sharing schemes among industrial process controllers, a new high-efficiency scheme is provided in this paper. Compared to other schemes, the network load is reduced and system reliability is enhanced, and the configuration is simpler. Moreover, dual network mechanism is designed to minimize data packet loss, and UDP is adopted to resend lost data while broadcasting the next message. Repeated messages can be identified and discarded. This scheme has been applied in various projects and proven effective.Keywords -industrial process controller; data sharing; user datagram protocol; object linking and embedding for process control