When creating event-to-actions for license plate reads, you can specify more conditions based on Sharp analytics to trigger an action. For example, you can specify that an action occurs only when the plate number contains “123” or the vehicle is traveling at a certain speed.
Before you begin
What you should know
- You must type conditions as an expression that contains an identifier, operator, and a
text or numeric value. For example,
[PlateNumber] = "ABC123"
. To know more about the operators and identifiers that you can use, see Elements used in event-to-action conditions for license plate reads. - You must type identifiers in square brackets:
[PlateNumber]
. - You must type text values in quotation marks:
"ABC123"
. - You can use AND and OR to combine multiple expressions. You can use parentheses to force
the order of the evaluation. For example, if you type
[Speed] > 20 AND [Speed.unit] = "mph") OR ([Speed] > 50 AND [Speed.Unit] = "km/h"
the AND operator takes precedence. - You can use the exclamation point (!) to exclude an expression. For example, if you type
[PlateNumber] contains "123" AND !([PlateState] = "QC")
, any plate reads with a plate number that contains the value "123" and a plate state other than "QC" trigger an action. - Sharp analytics are not generated 100% of the time. If the Sharp unit cannot generate the analytic specific in the condition, an event-to-action might not be triggered. For example, if the condition is [Speed] > 50 and the Sharp unit cannot produce a value for speed, Security Center evaluates the condition as being false and the action is not triggered.
- When the outputs of a SharpZ3 base unit are used to control building access through event-to-actions in Security Center, rebooting the base unit causes the outputs to activate, which could lead to the opening of the access point. This output behavior is not ideal for access control, but is required to power the in-vehicle computer on vehicle startup. Create an event-to-action in Security Center that will send a "Normal" state to the outputs following a "Unit Connected" event. The access points will still open, but will close shortly afterward.