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Introduction to the Alarms Module 
The Alarms Module monitors and manages real-time alarm events, alerts, notifications, and Audit Trail information. It provides alerts for critical events and stores data for future analysis. Key functions include:
Real-time alarm states processing
Storage on any database provider
Hierarchical organization of alarms
System AuditTrail events and operator actions tracking
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Key Concepts and Terms
AlarmItem
: A tag monitored by the Alarm Module, containing information such as tag name, alarm condition, AlarmGroup, Limit, Deadband, and Message.
AlarmGroup
: Collection of AlarmItems sharing properties such as AckRequired and LogEvents.
AlarmArea
: Hierarchical grouping of AlarmGroups for better organization.
Audit Trail
" Logs changes and events when executing the solution, tracking who made changes and when. Useful for troubleshooting, analysis, and compliance.
Understanding the Alarms Module
Module Features
- AlarmViewer Control and AlarmAreas Control for displays.
- Real-time alarm processing
- Hierarchical alarm management
- Dynamic language localization for messages
- High-precision timestamps
- Custom notifications (e.g., SMS, email)
- Store and Forward archiving
- Automated replication in hot-standby scenarios
Monitoring Tags and Evaluating Conditions
When the Module Alarm is execution, all tags defined on AlarmItems are subscribed, so the alarm conditions are evaluated every time the tag as new value.
If a condition is reached, the alarm is issued, according to the behavior defined by its AlarmGroup. Notifications are sent if enabled to that group.
Runtime Execution
During runtime, the AlarmViewer component connects with the server to get information about the online alarms, or historical data according its configuration.
The online configuration is updated in real-time as new alarms happened or have its state changed. Users can interact with the AlarmViewer to monitor, filter, and manage alarms effectively.
Module Features
- Real-time alarm processing
- Hierarchical alarm management
- Dynamic language localization for messages
- High-precision timestamps (ms resolution)
- Custom notifications (e.g., SMS, email)
- Store and Forward archiving
- Automated replication in hot-standby scenarios
Pre-Defined AlarmGroups
The Alarms module provides a predefined AlarmGroup to quickly configure alarms for common applications. These groups have pre-configured properties that make it easier to create and configure alarms for standard purposes.
To use a predefined AlarmGroup, you simply need to select it from the list of available groups and configure additional properties as needed.
The pre-defined AlarmGroups are:
- Critical: High Priority Alarms that requires acknowledgement and History logging.
- Warning: Medium Priority Alarms and Low Priority Alarms, which don't require acknowledgment, but are logged.
- Audit Trail: Alarms and Events that don't show on Operator Displays, but are records on the History log.