Advanced Process Analysis Based on OPC Technology

Aiming at the communication between LabVIEW and DCS, the paper presents a method of implementing remote real-time communication based on OPC (OLE for Process Control) on the Ethernet. It analyzed the principle of remote real-time communication between LabVIEW and DCS and designed a remote real-time communication test system consisting of LabVIEW, Ethernet and Honeywell HC-900 DCS. The author realized the HC-900 DCS hardware configuration, OPC server configuration, configuration variable and real-time data exchange between LabVIEW and HC-900 DCS by using NI (National Instrument) OPC server, and gave out the details of procedure and program. The test results indicate that the function of exchanging remote real-time data can be attained between LabVIEW and HC-900 DCS through OPC server, and prove that it is an effective and feasible method to realize the real-time remote communication between LabVIEW and DCS. The proposed method can be used to realize data process and advanced control in industrial to improve the process quality and control.