Why is this functionality useful?
Linear alert functions allow users to define alert boundaries that follow a custom linear geometry rather than relying on a single fixed threshold.
This is particularly useful when alert limits vary depending on factors such as depth, distance, or another X-axis parameter.
With this functionality, users can:
- Define multi-point alert boundaries.
- Configure different alert levels for individual threshold lines.
- Specify whether a limit triggers above or below the defined boundary.
- Configure multiple limits for the same alert level.
- Visually validate threshold geometry before saving.
Feature Highlights
Coordinate-Based Threshold Input
Define custom linear boundaries using multiple X,Y coordinate pairs. Coordinates should be entered using the following format:
x,y; x,y;
For example:
0,0; -1,1; -5,8;
Multi-Level Alert Assignment
Each threshold line can be assigned to a specific alert level, such as Action or Alarm, using the Alert Level dropdown.
Directional Trigger Rules
The Trigger selector determines how the system evaluates readings against the defined boundary:
- Upper: Triggers when values exceed or cross above the linear boundary.
- Bottom / Lower: Triggers when values drop below the linear boundary.
Multiple Limits
Multiple threshold lines can be configured for the same alert level. Use the + icon to add additional limits within an alert block, or + Add limit to create a new threshold block.
Real-Time Visualization
The configured coordinates are displayed on an interactive Cartesian graph, allowing users to visually verify the threshold geometry before saving the configuration.
How does it work?
Step 1: Open Linear Functions
Navigate to Instrument Settings > Alerts > Linear Functions.
Step 2: Add a Limit
Click + Add limit to create a new threshold block, or select an existing limit to modify it.
Step 3: Select the Alert Level
Choose the desired Alert Level, such as Action or Alarm.
Step 4: Enter the Coordinates
Enter the X,Y coordinate pairs in the designated field using the required format:
x,y; x,y;
For example:
0,0; -1,1; -5,8;
Step 5: Define the Trigger
Select the appropriate Trigger condition:
- Upper — triggers above the boundary.
- Bottom / Lower — triggers below the boundary.
Step 6: Verify the Threshold
Review the threshold line on the preview graph to confirm that the configured coordinates produce the expected boundary.
Step 7: Save the Configuration
Once the configuration has been verified, save the changes to apply the linear alert function.
Key Benefits
- Flexible, multi-point alert threshold configuration.
- Enables applying different alert levels and trigger directions.
- Ability to configure multiple limits within the same alert level.
- Visual validation of threshold boundaries before saving.
- Greater control over complex, variable alert conditions.