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U.S. Department of Energy
Office of Scientific and Technical Information

EPICS Version 4 - Implementing Complex Data Types

Technical Report ·
DOI:https://doi.org/10.2172/1055720· OSTI ID:1055720

Through phase 1 and phase 2 SBIR grants, s fully functional I/O Controller and communication protocol for version 4 of EPICS is completed. This new software architecture provides a flexible and extendible architecture. Version 4 is implemented fully in Java. The performance metrics look promising. The final portion of phase 2 is to optimize the communication mechanisms. Subsequent work on different aspects of this are required to provide a viable solutions in various areas. Version 3 of EPICS is able to provide a platform for implementing channel based control, because the channel and attributes for time stamping, alarm, display and control were narrow, well defined, and complete. To extend EPICS functionality beyond this, it is necessary to define attributes needed for archive data, array, image data, and directory services. The proper handling of several array types enables the development of middle layer servers such as orbit and bump control in accelerators. Phase 1 should produce a well defined, reviewed, and agreed upon definition of the metadata required for these services. A Phase 2 grant would provide tools that implemented archiving, general array, imaging, and directory applications.

Research Organization:
EPIC Consulting
Sponsoring Organization:
USDOE; USDOE SC Office of High Energy Physics (SC-25)
DOE Contract Number:
SC0004394
OSTI ID:
1055720
Report Number(s):
Technical Report
Country of Publication:
United States
Language:
English

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