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Alarm Management at Jefferson Lab. A New Configuration and Extended Capabilities B. Bevins , M. Joyce, J. Sage. Outline. New Requirements ALH Usage ALH Modifications CDEV Modifications Other Development Status. New Requirements. Motivated by a new control room design

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alarm management at jefferson lab

Alarm Management at Jefferson Lab

A New Configuration and Extended Capabilities

B. Bevins, M. Joyce, J. Sage

outline
Outline
  • New Requirements
  • ALH Usage
  • ALH Modifications
  • CDEV Modifications
  • Other Development
  • Status
new requirements
New Requirements
  • Motivated by a new control room design
    • Global acknowledgement
    • Global disabling
    • Smarter automatic disabling
    • Centralized logging
    • Geographical view of accelerator
    • Make alarms “more meaningful”
  • Motivated by maintainability
    • Automatic generation of configuration files
    • Separate configs for operators and experts
changes to alh usage
Changes to ALH Usage
  • Thorough review of alarm parameters
    • Removed extraneous alarms
    • Determined where to ignore transients and of what duration
    • Readable alias names used throughout
  • Use ALH in global mode
    • Master copy manages alarm logic
    • Operators open copies to acknowledge
  • Logs to CMLOG
  • FORCEPV’s to disable (automatic and manual)
  • SEVRPV’s to summarize alarm state in MEDM
alh modifications
ALH Modifications
  • Uses CDEV transparently
    • Wasn’t quite working before
    • Uses CHANNEL keyword rather than CDEVkeyword
    • Also works for FORCEPV, SEVRPV, etc.
  • Unacknowledged Severity PV’s
    • New keyword UASEVRPV works like SEVRPV
  • Disabling a group/channel updates parent group severity PV’s (both types)
why cdev
Why CDEV?
  • Legacy: high level RF system diagnostics calculated in CDEV-based RF Alarm Server
  • Allows alarms on other CDEV-based high level beam applications servers
    • Slow locks, real-time optics model, etc.
  • Alarm states can now be monitored and acknowledged directly from Tcl-CDEV applications.
cdev modifications
CDEV Modifications
  • CA Service Enhancements
    • Supports ack and ackt messages
    • Allows unAckSevr and ackTranstags (along with severity, status, etc.)
    • Allows correct canceling of monitor requests
      • Now matches the documentation
      • Prevents buffered callbacks from being delivered after a monitor has been canceled
other development
Other Development
  • makeALHConfig - Perl scripts to generate config files and sponsor FORCEPV and SEVRPV soft channels on a Proxy IOC (PIOC)
    • 15,372 alarms
    • 11,463 PV’s on PIOC
  • alhDisable - Tcl program to manage FORCEPV’s and manually disable alarms
    • Generates reports of all currently disabled alarms for shift changes, etc.
    • Makes an entry in the Logbook.
status
Status
  • New automatically-generated configuration has been in use for several months.
    • Vast improvement: alarms are no longer silenced and ignored.
  • Global alarm management is being tested and should be fully deployed in May.
  • Modified CDEV will be released soon after through the CDEV website http://www.jlab.org/cdev/.
  • ALH changes will be submitted for inclusion in new releases.
alarm management at jefferson lab1

Alarm Management at Jefferson Lab

A New Configuration and Extended Capabilities

B. Bevins, M. Joyce, J. Sage