Boundaries enable users to visualize upper, lower and other signal limits.  This is particularly useful in process monitoring, as it enables the user to easily identify if a signal is operating within its limits or deviating from the normal or expected behavior.

Using the Boundaries Tool

Primary Signal:  From the dropdown menu, select the time series signal for which the boundaries will be applied from the details pane, pinned items or recently accessed sections.

Select the relation type:   From the dropdown menu, select Boundary or Other.  The Boundary option allows you to create a pair of upper and lower boundary limits for the Primary Signal. The Other option allows you to define a single boundary for the Primary Signal such as an upper, lower, average, reference or other.  If Boundary is selected as the relation type, an upper and lower signal must be provided and the boundaries will be displayed as a shaded region between the upper and lower signals.  If Other is selected as the relation type, a single signal must be provided, which will be displayed as a dashed line.

Name: Specify a name for the new boundary or pair of boundaries.

Upper Signal and Lower Signal:  If you have already defined signals to represent the upper and lower limits, select the signals from the appropriate dropdown menus. If you have not yet defined signals for the boundaries, click  to create new signals using the Reference Profile Tool. You will only enter one signal if you are using the Other relation type.  Click  to add the signal to the Details Pane and trend the signal in a new lane.

Available outside of this analysis: Checking this box allows this condition to be used in other workbench analysis and topics. It will be available for all Seeq users and will display in their search results. Consider using a unique name as the boundary will be published to the global name space. 

Create Boundaries

Once the Boundaries tool is selected from the Tools menu, specify the Primary Signal.  If the Primary Signal already has boundaries configured, they will be listed.  If no boundaries are configured, click New to add boundaries to the signal.

Once the inputs are provided, click save to apply the boundaries to the signal.

The configured boundaries are now listed under the Primary Signal in the Boundaries tool.  Note that the Upper and Lower signals provided as inputs in the Boundary Tool are no longer trended as separate signals; they are now plotted as boundaries in the same lane as the Primary Signal.  

Edit & Delete Boundaries

If a signal already has boundaries configured, an icon is displayed next to the signal in the Details Pane.  To edit the boundaries, the user can click on this icon or navigate to the Boundaries tool for the signal.  

On this menu, the 'eye' icon can be selected to add or remove the boundaries from display.  Note that removing the boundaries from display does not delete the boundaries.

Click the edit icon to edit the information or delete the boundaries.

Click the icons on the right to add the upper and lower signals to the Details Pane and trend the signals in a new lane.