CERN Accelerating science

Article
Title	The Cryogenic Supervision System in NSRRC
Author(s)	Li, Hsing-Chieh ; Chang, Sheng-Hsiung ; Chiou, Wen-Song ; Hsiao, Feng-Zone ; Tsai, Zong-Da
Affiliation	(NSRRC, Hsinchu)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.844
Subject category	Accelerators and Storage Rings
Abstract	The helium cryogenic system in NSRRC is a fully automatic PLC system using the Siemens SIMATIC 300 controller. Modularization in both hardware and software makes it easy in the program reading, the system modification and the problem debug. Based on the Laview program we had developed a supervision system taking advantage of the Internet technology to get system's real-time information in any place. The functions of this supervision system include the real-time data accessing with more than 300 digital/analog signals, the data restore, the history trend display, and the human machine interface. The data is accessed via a Profibus line connecting the PLC system and the supervision system with a maximum baud rate 1.5 Mbit/s. Due to this supervision system, it is easy to master the status of the cryogenic system within a short time and diagnose the problem.