7.4        Alarm Configuration

Unlike other HMI and SCADA, you do not need to create  additional alarm tags. Alarming can be enabled for every analog or discrete tag through the Project Manager.

Of course, alarm configuration can be added to a Tag by simply changing the tag’s configuration. An alarm is “configured” by selecting a non-zero Alarm Priority for the alarm type.

In a perfect world, the engineer “plans” what the alarm values of the tags in the system will be, then engineer or technician enters these values as the tag is configured. Alarm Limits can be changed on-line without stopping or downloading the SCADA node, if the alarm is already configured with a non-zero Alarm Priority for the Tag.  By changing the Alarm Field for the Tag.

Analog tags have six alarm-types: High-High, High, Low, Low-Low, Rate of Change and Deviation alarms. Any combination of these alarm types can be selected.

Discrete tags have a state alarm. The Alarm can be any state (0 through 7) .  For example, in a 2-state Digital Tag, the alarm is on the zero (false) state or alarm is on the one (true) state.

As a productivity tool for large projects consisting of hundreds or thousands of tags, the WebAccess Tag database can be configured via Query or View of the Access Database.

To Configure an Alarm for a Tag:

Alarm configuration is done during tag configuration described in the earlier section 4 Tags

1.      Open Internet Explorer

2.      Connect to the Project Manager.

3.      Login as admin or Project User.

4.      Open Project Manager for Your Project

5.      Select your SCADA node.

6.      Select the Tag

7.      Select Tag Property.

8.      From the Pull Down List, select Alarm.

9.      Wait for the Page to Update. A Pink border should appear around Alarm.

10.  Drag the slider bar down to the bottom to the Page into the Pick Section.

11.  Select a Non-Zero Alarm Priority for the desired Alarm Type.

12.  Enter an Alarm Limit.

13.  Analog Tags can have multiple Alarms. Enable other alarms for the tag by entering a non-zero Alarm Priority and Alarm Limit.

14.  Press Submit.

15.  Download and Restart your SCADA node.


For Detail Description of Analog Tag Properties see section 4.2.31 ALARM Properties - ANALOG TAGS.

For Detail Description of Discrete Tag Properties see section 4.3.24 ALARM Properties - Discrete Tags


Note - Alarm Limits can be changed on-line without stopping or downloading the SCADA node, if the alarm is already configured with a non-zero Alarm Priority for the Tag, by changing the Alarm Field for the Tag.


To Configure Logging Alarms and Operator Actions to printers or ODBC Databases, please refer to section 3. SCADA NODE properties.  or the following Sections:

o        3.2.18Alarm Log To Printer

o        3.2.19Alarm Log To ODBC

o        3.2.20Action Log To Printer

o        3.2.21Action Log To ODBC

o        3.2.8 Outgoing Email Server - SMTP

o        3.2.9Email From

o        3.2.12Alarm Email To

o        3.2.13Alarm Email CC

o        3.2.14Reply Alarm Email to Ack

o        3.2.16Incoming Email (POP3) Server

To Configure Alarm Horn or Text-to-Speech Alarm Annunciation characteristics., please refer the following section 3. SCADA NODE properties or the following Sections.

o        3.2.17Alarm Voice

o        3.2.25Beep Interval

o        3.2.26Beep Frequency

o        3.2.27Beep Duration

o        3.2.28Lines per Log Page

o        3.2.29Printer Control String