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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


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