Traffic Light

Multisim Help


Edition Date: February 2017
Part Number: 375482B-01
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Multisim 14.0 and 14.0.1 Help
Multisim 14.1 Help
Multisim 14.2 Help

The ladder diagram in this section runs two traffic lights.

  The ladder diagram is contained in a separate hierarchical block called TrafficLightLogic.

Complete the following steps to run the traffic lights:

  1. Select Simulate»Run.
  2. Press P on your keyboard (or hover your cursor over the Power switch and click the button that pops up) to activate the Power momentary switch.
  3.   Select Window»Tile vertically to view the ladder diagram and the circuit at the same time. Observe the interaction between the ladder diagram and the circuit as the simulation proceeds.

  4. The red and green lights in traffic lights U1 and U3 light as shown below.


  5. After 15 seconds, the green lights turn amber.


  6. After 5 more seconds, the amber lights turn red and the red lights turn green.


  7. After 15 seconds, the green lights turn amber.


  8. After 5 more seconds, the amber lights turn red and the red lights turn green.


  9. The cycle continues in this way until you stop the simulation, or press K (or hover your cursor over the Kill switch and click the button that pops up) to activate the Kill momentary switch.

This topic refers to education-specific features of Multisim.

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