Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 219)

11 • S ETTING UP HMI TAG ALARMS
11–7
•
•
•
• •
11
•
Pla
ceho
lde
r
Alarm severity
HMI tag alarms can range in severity from 1 (most severe) to 8 (least severe), to indicate
different levels of importance.
For example, a level-4 alarm might warn that a vat is half full of liquid, while a level-1
alarm indicates that the vat is about to overflow. Both alarms monitor the same tag but
have different severity levels.
When you set up alarm severity, you specify what the severity levels mean and what
actions they will trigger. Severity determines the order in which alarms are shown in an
alarm banner.
Alarm messages
Alarm messages report information about alarms. There are three types of messages you
can set up for HMI tag alarms:
 In Alarm messages are generated when tags go into alarm.
 Out of Alarm messages are generated when tags goes out of alarm.
 Acknowledged messages are generated when operators acknowledge alarms.
For each message type, you can use the default message or create a custom message, and
route the messages to a log file or a printer, or to both destinations.
Alarm log file
The alarm log file records HMI tag alarm incidents. You can view the contents of an alarm
log file in the HMI Tag Alarm Log Viewer.
Use the HMI Tag Alarm Log Setup tool to set up how often log files will be created and
deleted. You can also use the tool to set up automatic logging to a central ODBC-
compliant database.
Only when a tag value changes
from 0 to 1. Changes to On*
Only when a tag value changes
from 1 to 0. Changes to Off*
In the table, the asterisk ( * ) indicates change-of-state digital alarm types. These are considered
out of alarm immediately after the change of state.
To trigger an alarm Create this type of digital alarm