This article describes concepts and mechanisms that is used in porting of EPICS (Experimental Physical and Industrial Control System)  codes to platforms of UNIX operating systems. Without destruction of EPICS architecture new features of EPICS is provided the support for real time operating system LynxOS/x86 and equipment which is produced by our institute. Application of ported EPICS reduces the cost of software and hardware is used for automation of FEL (Free Electron Laser) complex . Also it is allowed the creation of classical two-level distributed control system. The upper level is operating interface, lower level executes real time control. Such system allows optimal and economical usage software and hardware resources. The lower level of FEL control system contains following autonomous systems: RF system, injector, one-track accelerator-recuperator, optical part of FEL complex. Due to the advanced features of ported EPICS, program package was created for lower level to solve the set of technological tasks: testing equipment, individual error logging for each device, various statistics for control of physical parameters.
 Official site of EPICS collaboration. http://www.anl.aps.gov/epics
 N.A. Vinokurov, Status of Novosibirsk high power free electron laser,Proceedings of AFEL-99, June 8-10 1999, Korea Atomic Energy Research Institute, Taejon, Korea pp7-12.
Last updated: September 13, 2002
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