Realization of Real-Time Data Exchange between OPC Client and Multiple Remote Servers

2013 ◽  
Vol 385-386 ◽  
pp. 1655-1658
Author(s):  
Da Hua Li ◽  
Hang Li ◽  
Kai Lin Zhang

The submitting of OPC (OLE for Process Control) has promoted the progress of the data collection in process control and industrial automation, and formulated the industry standard for the process real-time data exchange. Aiming at the key problem of ensuring the use of application program as OPC client to link multi-remote OPC server and real-time collect process data in control system, OPC technology and the connection and access technology of multi-remote OPC server were introduced and analyzed in detail. This method has been successfully applied to develop the DCS I/O communication and control loop error test software, and provided better performance.

2013 ◽  
Vol 278-280 ◽  
pp. 831-834 ◽  
Author(s):  
Xiao Sun ◽  
Hao Zhou ◽  
Xiang Jiang Lu ◽  
Yong Yang

This paper designed a motor winding testing system, it can do the dielectric withstand voltage test of inter-turn under 30kV.The system can communicate effectively between PC and machine, by using the PC's powerful capacity of process data and PLC's better stability and the Labview's convenient UI. So the system has real-time data collection, preservation, analysis and other characteristics. This system is able to achieve factory testing and type testing of the motor windings facilitating. Various performance indicators were stable and reliable by field test during a long time.


2014 ◽  
Vol 26 (11) ◽  
pp. 115103
Author(s):  
李桂花 Li Guihua ◽  
赵五元 Zhao Wuyuan ◽  
马进忠 Ma Jinzhong ◽  
汪荣荣 Wang Rongrong

2012 ◽  
Vol 24 (12) ◽  
pp. 2897-2900
Author(s):  
曾贤强 Zeng Xianqiang ◽  
敬岚 Jing Lan ◽  
龙银东 Long Yindong ◽  
姚泽恩 Yao Ze’en ◽  
郭玉辉 Guo Yuhui

2016 ◽  
Vol 25 (06) ◽  
pp. 1650063 ◽  
Author(s):  
Sadiq M. Sait ◽  
Ghalib A. Al-Hashim

Refining and petrochemical processing facilities utilize various process control applications to raise productivity and enhance plant operation. Client–server communication model is used for integrating these highly interacting applications across multiple network layers utilized in distributed control systems. This paper presents an optimum process control environment by merging sequential and regulatory control, advanced regulatory control, multivariable control, unit-based process control, and plant-wide advanced process control into a single collaborative automation platform to ensure optimum operation of processing equipment for achieving maximum yield of all manufacturing facilities. The main control module is replaced by a standard real-time server. The input/output racks are physically and logically decoupled from the controller by converting them into distributed autonomous process interface systems. Real-time data distribution service middleware is used for providing seamless cross-vendor interoperable communication among all process control applications and distributed autonomous process interface systems. Detailed performance analysis was conducted to evaluate the average communication latency and aggregate messaging capacity among process control applications and distributed autonomous process interface systems. The overall performance results confirm the viability of the new proposal as the basis for designing an optimal collaborative automation platform to handle all process control applications. It also does not impose any inherent limit on the aggregate data messaging capacity, making it suitable for scalable automation platforms.


1992 ◽  
Vol 7 (3) ◽  
pp. 1322-1332 ◽  
Author(s):  
K. Kato ◽  
I. Dabbaghchi ◽  
J.J. Allemong ◽  
J.K. Robinson ◽  
J. Singh ◽  
...  

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