The Cameo Safety and Reliability Analyzer plugin allows you to link Failure Modes to Actions in any stage of the modeling process. With this option, you can foresee any possible action-related Failure Modes, and add them to your model before starting actual safety and reliability analysis.
Failure Modes can be linked to actions in the following ways:
Linking Failure Modes to Actions in an Activity Diagram
The easiest way to link a Failure Mode to an Action is to drag it from the containment tree in the model browser to an Action shape in an Activity Diagram.
To link a Failure Mode to an Action in an Activity Diagram
- In the model browser, locate the desired Failure Mode, and drag it directly to the shape of the Action.
Dragging a Failure Mode to an Action shape specifies the Failure Mode as the value of the Failure Modes property of that Action. In addition, the Failure Modes property is automatically displayed to which the Failure Mode was dragged, as shown in the figure below.

In this Activity Diagram, the Read sensor value and Control insulin delivery Actions are linked to the Drop in sensitivity and Voltage error Failure Modes. The Failure Modes are automatically displayed on the shapes of the Actions to which they are linked.
Linking Failure Modes to Actions in the Specification window
Since linking a Failure Mode to an Action specifies it as the value of that Action's property, this link can be defined in the Specification window of the Action.
To link A Failure Mode to an Action in the Specification window
- Open the Specification window of the desired Action.
- From the Properties list in the property group toolbar, select All, if this option is not already selected.
In the general specification pane, on the right side of the window, click the Failure Modes property specification cell, and then click
. The Select Elements dialog opens.
- On the left side of the open dialog, select the Failure Mode(s) you want to link to the Action.
Click
to add the selected Failure Mode(s) to the Selected elements area. If you want to add all Failure Modes contained in a specific Package, select that Package, and click
.
- Click OK.
- Close the Specification window.
After following the procedure above, the selected Failure Modes are specified as the values of the Failure Modes property of the desired Action. In addition, the Failure Modes property is automatically displayed on the Action shape if that Action is displayed in an Activity Diagram.