Overview and Key Concepts

Use the Unload activity to make a task executer (such as an Operator or Transporter) unload an object in the 3D simulation model. For example, you can make a task executer drop off a flowitem at a processor or queue.

The Unload activity creates an unload task sequence and dispatches it to a task executer. Optionally, the task may be appended onto an already existing task sequence. See Create Task Sequence activity for more information.


The Unload activity only allows one connector out. See Adding and Connecting Activities for more information.


The following image shows properties for the Unload activity:

Each of these properties will be explained in the following sections.


Used to change the name of the activity. See Name for more information about this property.


The Font button opens a window to edit the activity's background color and font properties. See Font for more information about this property.


The Statistics button opens the activity's statistics window. See Statistics for more information about this property.

Executer / Task Sequence

Use the Executer / Task Sequence box to determine which task executer or task sequence should receive the task. See Executer / Task Sequence for more information about this property.


Use the Item box to determine which item or object should be unloaded. Typically this is a flow item, however, other objects can be used. There are many different ways to reference flow items and objects in the model. Below are just a couple of examples:

  • You can use a Create Object activity to create a flow item in the 3D model and assign the appropriate label to that object.
  • You can create a Wait For Event or Event Triggered Source activity that listens for flow items arriving at a fixed resource and assigns a label to those entering flow items.


Use the Station box to select the object from which the task executer should unload the item to. Usually you will point to a fixed resource (such as a processor or queue) but you can also point it to another task executer.

Wait Until Complete

If the Wait Until Complete box is checked, the token will be held in the activity until this task has been completed.