Like with drivers, trailers can be bound to units either manually or automatically. To assign trailers to units, you need to have the Create, edit, and delete trailer access right towards the resource where the trailers belong. The conception of simultaneous bindings of trailers to units is the same as for drivers.

Manual binding/unbinding can be performed in the Trailers panel. A special switch button is located against each trailer —  or  correspondingly. If you do not have enough access rights, then the button is disabled .

Click Bind to unit button (), choose a unit the trailer to be bound to, and click OK.

 Availability of units in this list depends on the work list in the Monitoring panel. If there are no units in the list, click on the Add all available button . If the list is still empty, then you have no access rights to these units.

To unbind a trailer from a unit, click an icon of a unit opposite to trailer’s name, and then use the corresponding button (). Besides, you can unbind a trailer by registering a new working shift, or by deleting bindings from history.

Automatic method of binding trailers to units requires both special equipment (such as iButton system), and special adjustments in the system.

1. Create a special sensor of the Trailer binding type in the properties of each unit intended for auto-binding. A parameter for this sensor can be avl_driver or some other depending on your equipment and its configuration.

2. Create a list of units for any resource the trailers of which are intended to be bound automatically. In order to do so, click on the Auto-binding icon (), and follow the steps listed below.

Click on the Automatic binding icon to open a list of available resources.  Here you choose a resource the trailers of which will be used in automatic binding (with the units chosen in the next dialog). In order to understand which trailers belong to a particular resource, go back to the Trailers panel, and apply a filter by resource (the dropdown menu to the right of the Create button).

After choosing a resource, click Next. If only one resource is available, then it is selected automatically.

The next dialog contains a list of units to which the trailers from a selected resource can be bound automatically. Depending on the access rights possessed, the list can be viewed or edited.

Thus, a trailer is automatically bound to a unit with the help of iButton in case that this unit has a special sensor configured in its properties and that this unit is indicated in the list of auto-attachable units applied to the resource where the trailer belongs.

Automatic binding of trailers is removed in the same way: summon the Automatic binding dialog, select a resource, and uncheck the boxes of units for which the automatic binding is not used.

This option can be used, for example, if you would like to register working shift post factum. Use the corresponding button () opposite to a driver’s name, choose the Register working shift option, and click Next. In the appeared dialog window select a unit to which the driver will be assigned in the indicated shift, click Next. Now indicate time of shift beginning and end. Moreover, you can indicate either only beginning or only end time. For example, you have indicated shift beginning, and you would like its end to be registered automatically when a unit arrives to garage (as a geofence). To do so, create a notification of the Geofence type with the Reset driver method of action. Anyway, registering a working shift you can use only past dates or current time (no future allowed).

Incorrect registrations of trailers can affect reports and their informational efficiency. That is why sometimes you may need to delete such (un)bindings from the database. In the interval registering dialog choose the last option — Delete bindings — and press Next. Specify time interval, and press Show to display all bindings and unbindings of the trailer on the interval. Check invalid messages and press OK to delete them.

 Note.
Like with units, the last message from the trailer (whether it is a binding or unbinding) cannot be deleted.