PI-Client AlarmDon Smith

Roger Humphrey Artemis Theodoropoulou

Requirements

PI-3 Data Archive requiredpointclass of alarm

All Archives have alarm capability

PI-AlarmView is client application to display – search – acknowledge

PI-AlarmView can also be used as Active-X components in projects

Demo

Configuring Alarm Points

pialarm33

(LOLO, LOW, HIGH, HIHI, RATE, STEP, CHANGE, DIG1, DIG2)

3 priorities, and 3 acknowledgment statuses

Groups to collect alarms

Groups can be hierarchical

Configuring Groups

Group(s) are pi tags

tagname=exdesc=group name

pointsource=G

The value of the tag is the alarm statistics

For each alarm point specify the associated alarmgroup in exdesc

Documentation references

PI Administrators training manualchapter 12

PI Data Archive manual chapter 8

PI-3Alarm Calculation

PI Archive

PI-ClientAlarm

Get eventsPut alarm results

Get alarmsPut acks

pointclass=alarmpointsource=@

alarm points

Results are digital points

Inputs are numeric, digital and string points

alarm points are members of an alarm group

alarm groups

Set of alarm points is organized into alarm groups

Groups are also archive points and collect information such as the number of points and number of unacknowledged alarms

Groups can be collected into groups forming a hierarchy

Action1

Alarm DigitalState Set

CombinerLogic

Alarmpoint

Sourcepoint Test1

Action4Test4

Action3Test3

Action2Test2

ReferenceTag

Alarm Subsystem

If “Testx” condition is true, then state is set to “Actionx”

Up to 4 Test/Action pairs supported

Alarm Test Qualifiers

GT

LT

EQ

NE

StepGT

StepLT

RateGT

RateLT

Is_in

Not_In

Includes

Change

CondEQ

CondNE

IsUnAck

Alarm Tests numeric tags

Numeric source tags Value comparison GT, LT, EQ, NE Single move up/down: StepGT,

StepLT Rate of change up/down: RateGT,

RateLT

Alarm Tests strings & dig tags

Digital and string source tags Substring or state list: Is_in, Includes String match: EQ, NE

Example Alarm Test Configurations

Typical DCS style four level alarm

Test1 : GT( 95 ) -> Action1 : Hihi 3Test2 : GT( 85 ) -> Action2 : Hi 2Test3 : LT( 30 ) -> Action3 : Low 2Test4 : LT( 20 ) -> Action4 : Lolo 3

Example Alarm Test Configurations

Dynamic alarm Limits

Test1 : GT( ’23:F-101.Hilim’ ) -> Action1 : Hi 2

Test2 : LT( ’23:F-101.Lolim’ ) -> Action2 : Low 2

Example Alarm Test Configurations

Overtemp with time qualifiers

Test1 : GT( ‘metal_limit’ ) +2m -> Action1 : Hihi 3

Test2 : GT( ‘metal_run’ ) +20m -> Action2 : Hi 2

Test3 : GT( ‘metal_run’ ) +30s -> Action3 : Hi 0

Alarm Groups

Each point assigned to a group

Each groups may be arranged in a single hierarchy

Points may be configured to display the number of alarms in each group by priority and acknowledge status

PI Alarmview

Container with three controlsAlarm list control

Alarm tree control

Alarm history

Controls Alarmview container

Controls in Process Book

Controls in your VB projects

Live Alarms…

Applications

Network health alarmspi-perfmon

Engineering alarms

Production management alarms

Environmental , energy management specialist applications

PI Alarm Client plans

First release Q2Multiple servers

Filtered groups

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