INSIGHT

AND

OVERVIEW

Slide Show 9:

Alarms and Events

Alarm Handling

Contents

• Defining alarms and alarm texts

• Predefined alarm texts

• Alarm indication on diagrams

• The Alarm List

• Embedded Alarm Lists

• Defining Events

• The Event List

Defining alarms

• Alarms can be defined for analog, digital, counter and table objects

• The alarm atom must be enabled

• An alarm number must be mapped to the enabled alarm atom

• The alarm text can be defined from the object properties dialogue or

• From the full alarm text list(”Alarm Texts” in ”Edit” menu)

Alarms and I/O modes

• The alarm atom can be ”local”(f.ex. a limit for an analogue object)

• The alarm atom can be ”in”(the alarm bit comes from the PLC)

• The alarm atom can be ”out”(the alarm bit is sent to the PLC)

Table objects – inherit alarmsScenario:

Ten temperature gauges (t1 – t10)

Table tab

All table items defined.

All items must have

same meausuring range.

Data Management Definitions tab

In the ”Connect to” drop-down list,

select the analogue object to determine

the alarm ranges and alarm texts.

The table object inherits the alarm

limits from ”t1”.

Alarm ”see-thru”

When an object on the ”Dairy” diagram

goes in alarm, this button blinks according

to the definition in alarm text no. 1

Embedded Alarm List (1)

Purpose

Embed an alarm list directly on a process diagram. Create

alarm filter(s) corresponding to what you want the operator

to view. To be used as a subset of the entire alarm list.

Example

Place an embedded alarm list on an overview diagram for

an area of the configuration.

Embedded Alarm List (2)

STEP 1:Place the embedded alarm liston the diagram.

Embedded Alarm List (3)

STEP 2:

Define column and

sort order

Drag and drop to change order.

Use ”Save as template” to use settings

for next instance.

Embedded Alarm List (4)Step 4:

Create filters or import filters

Embedded Alarm List (5)

STEP 5:

Install and start the

configuration Default filter is shown.

The operator can acknowledge alarms.

Defining and Handling Events

Event List - Overview

• Overview of the latest system and object events

• The events are user-defined

• Events are presented in the Event List which is shown below the Alarm List

Defining events

In Definition

In the Edit menu,

select Event List.

In Supervise

In the Tools menu,

select Events.

Click the Add button.

Event types

• OP Connect/Disconnect

• Periodical

• System start/stop

• User defined

• User login/logout

• Writing stopped/started

• Error packet

General features

Name

Shown in the Event

List

Type

Choose the event

type

Display color

Color for the Event

List

Alarm on event

Show the event in

the Alarm List

To history

Save the event in

the Event Log

OP Connect/Disconnect

Event

Activated when operator station connects or disconnects.

Info in Event List

•”Connect”, ”Disconnect”, ”Lost connection”, ”LAN B”

• IGSS station name

Periodical

Event

Recurs at the interval specified, f.ex. every month. Used as a task reminder.

Info in Event List

NA

Period

Specify interval

First event at

Specify date/time

for first occurrence

System start/stop

Event

Activated when data collection is started and stopped

Info in Event List

”Start write”, ”Stop write”

User defined

Event

Activated when the given criteria are fulfilled. One or more objects can be

involved.

Info in Event List

-STEP 1:

Click ”Object

Browser” and

select object.

STEP 2:

Click ”Add Criterion”

STEP 3:

Under ”Type”, select

”AND” or ”OR”

STEP 4:

Specify criterion.

User login/logout

Event

Activated when user logs in and logs out.

Info in Event List

• ”Login”, ”Logout”

• User name

• IGSS station name

Writing stopped/started

Event

Activated when writing of data files is started and stopped

Info in Event List

• ”Start write”, ”Stop write”

Error packet

Event

Activated when a PLC driver error is registered.

Info in Event List

• Driver error, node number

• Error group

• Error code, subcode

The Event List

• A quick overview of the latest system and object events

• Presented just below the Alarm List

• ”Active Events” and ”Event Log”

• Filtering, sorting and rearranging of columns possible

Event name

The name defined in Definition or Supervise

Info 1, 2, 3

Event details

Active Events/Event Log

Active Events

Shows all events from the last hour or the 500 latest events. Alarm number 98

is used for events.

Event Log

Shows the events which have the ”To history” option enabled

Events in the Alarm List

• Events marked with the ”Alarm on event” option will appear

• Alarm number 90 is used for events (incl. alarm and acknowledgment colors)

• ”Alarm text” is the event name

• Acknowledging an event alarm also ends the alarm

• Events can be printed on the alarm printer

Student Exercise

Do Exercise 6 in the Exercises booklet.