According to the BACnet protocol documentation:

Specifies the passback timeout in minutes. The timeout is evaluated individually for every credential used to enter the zone. The timeout period for a particular credential begins at the time of successful access to the zone. After the timeout has expired for a particular credential, a passback violation of this credential will no longer be detected. A value of zero or absence of this property indicates passback violations will never time out.

Property passbackTimeout of object accessZone can be read and written using a single IOTag.

Text Parameters

Numeric Parameters

Tag Value

A 32-bit unsigned integer.