Implementation of an EPICS IOC on an Embedded Soft Core Processor Using Field Programmable Gate Arrays.

Curry, D. ; Hofler, A. ; Dong, H.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerators;    Computerized control systems;    Computer architecture;    Design;    Implementation;   

RP-ID  :  DE2005850209

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

At present, to be accessible to the accelerators distributed control system, our field hardware must be designed to operate with a VME or VXI based single board computer Input/Output controller (IOC). Frequently, this requires long cable pulls and in some cases a new VME crate installation. During the initial design cycle, typically we must choose between the VME platform, serial communication, or blind stand-alone units. Stand-alone units provide no feedback to the control room and there is no convenient way to verify that the devices are functioning correctly. Serial devices are severely band limited and require expensive serial interface equipment when the standard IOC ports have been fully utilized. The VME based systems are expensive and often do not accommodate available space constraints. The ability to integrate the IOC directly into our custom hardware provides enormous flexibility and provides significant enhancements to our operating capabilities.