Only 1 Entity at a Time

When you only want to allow 1 entity at a time into a section of your model. This model object will limit the number of entries allowed in a given section of your model to 1.

Only 1 Entity at a Time model image

Where to Find the Model Object

The following model object can be found in the model objects directory:

  • Flow Control \ Only 1 Entity at a Time

Difficulty Level

  • Ease of Use: Easy
  • Ease of Modification: Easy

How to Use the Model Object

  1. 1. Open Your Model: Open your model or create a new blank model.
  2. Insert the Model Object into Your Model
    1. Locate the model object Only 1 Entity at a Time and select the insert button.
    2. Move the cursor to the point of insertion and left mouse-click. The upper left corner of the model object will be inserted at the location of the mouse-click.
  3. Connect to Your Model
    1. Connect the first route to the locations where you want to setup the initial gate.from your model to your model in Only 1 Entity at a Time
    2. Connect the second route to the locations representing the end of the controlled section.from your model to your model in Only 1 Entity at a Time
  4. Completion: The model object is now integrated into your model, you should now be able to save and then simulate the model.

Controls Usage


  1. v_Gate1: A value of 0 means there are no entities in the section. A value of 1 means there is 1 entity in the section.

Advanced Topics

Limit X Number of Entities for a Section

  1. Click on the first route and goto action action logic in Only 1 Entity at a Time
  2. Change the wait until logic from 1 to the number desired. Example: If you need 2 entities to enter the section at a time, change to 2.edit action logic in Only 1 Entity at a TimeReplace 1 to the number desired
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