Expression Builder

Expressions are used in Safety Integrity to limit propagation to only occur when certain conditions are met. These are defined in the expression builder

To add an expression, click on the button

Give your expression a name and a description - the only types available are "Query" and "True", so these can be left. To add an item to the expression click on the button

Here you select the properties that you wish to compare, the operator you wish to compare them with and click