Lessons learned enhancing EPICS CA for LANSCE timed and flavored data
- Los Alamos National Laboratory
A previous paper described an upgrade to EPICS enabling client side tools at LANSCE to receive subscription updates filtered selectively to match a logical configuration of LANSCE beam gates, as configured by the control room. The upgrade required fundamental changes in the EPICS core components. First, the event queue in the EPICS server was upgraded to buffer record (function block) and device specific parameters accessed generically via software interfaces for introspection of 3rd party data. In contrast, event queues in previous versions of EPICS were strictly limited to buffering only value, timestamp, and alarm status tuples. Second, the Channel Access server is being upgraded to filter subscription updates. In this follow on paper some necessary design changes mid-project and the lessons learned during the software development will be described.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 971660
- Report Number(s):
- LA-UR-09-06489; LA-UR-09-6489; TRN: US1001234
- Resource Relation:
- Conference: ICALEPCS 2009 ; October 12, 2009 ; Kobe, Japan
- Country of Publication:
- United States
- Language:
- English
Similar Records
AESD (Advanced Energy System Design) Records API [SWRs-17-50, 17-51, 17-52]
Using EPICS enabled industrial hardware for upgrading control systems