The Gate object was introduced in LEGION Model Builder R6.5.0 and makes it much easier to draw, place and define single gates (see Gates for more information). Models from earlier versions of the software used combinations of objects to create gates in a gateline (typically Delay Point + Direction Modifier + Focal Node + Route Guide). These objects, with their associated Delay Profiles and Availability Profiles, simulated the physical character of gates and handled the way in which Entities used them, how long they took while using them, and how they moved when gates and gatelines were open, closed, in, out, paying, free, or reversed during everyday operations.

When using the more recent Gate objects, you may need or wish to recreate and reuse earlier Availability Profiles, effectively setting their states in line with earlier operational settings defined using these other objects. To this end you can create Gate Control Profiles from previous Availability Profiles and their predefined 'On' an 'Off' states. In this way you can use these 'On' and 'Off' states as the basis for the states of a Gate. For example, you can take the 'On' settings of an Availability Profile and use them to define when a Gate is IN or OUT or CLOSED, and so on. You can also use an Availability Profile's 'Off' settings in the same way. In this manner, a new Gate Control Profile can mirror an Availability Profile and the logic of an earlier model can be maintained.

Similarly, you may need or wish to instruct Entities how to move when Gates are closed or their direction is reversed from IN to OUT and possibly back again; or when they are closed during a simulation. In order to enable Direction Modifiers to send Entities away from closed Gates to open Gates or to instruct them to use more newly available open Gates, you can create Availability Profiles (used by DMs) from your Gate Control Profiles.

Both methods are described here.