LAB $2$: Creating a parking lot using ladder logic.

Goal of the experiment: To test your TwinCAT knowledge to see if you can build a parking lot system.

Experiment:

Using TwinCAT Ladder logic create a parking lot system, this system must have the following qualities:

$$ Sensors that detect a car has arrived or left.

$$ A maximum capacity of $5$

$$ LEDs to indicate if the lot is full or empty.

$$ Rise Trigger

$$ Up and Down Counter

EXPLANATION:

For this experiment you will create a new TwinCAT project and in said project you will create a new PLC

project. In this PLC project you will create your ladder logic program file, create the variables and the

logic blocks.

In your declarations section you will need to create variables for the in and out sensors$,$ Initialization

Maximum capacity, space available, red LED, green LED, and Reset. These variables will be declared as

BOOLS or Integers depending on their function. You will also need declare variables for the Rise Trigger

and the Count Up and Down boxes you will use in the experiment.

For this experiment you will need to create your logic blocks using the Insert Box, Insert Empty Box, and

Insert Empty Box with EN$/$ENO$.$ Each of these blocks will be given its own network rung. These boxes

are:

$$ Riser Trigger

$$ Count Up and Down

$$ GT

$$ NE

You will know if your project was successful once you are able to change the car in or out sensor and you

see the number of available spaces go up or down. Also, when there is at least one spot open in the lot

one of your LEDS should be on and when the lot is full the other LED should turn on