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Inst Tools > Blog > PLC Tutorials > Automatic Door Operation PLC Programming and Simulation

Automatic Door Operation PLC Programming and Simulation

In this PLC program, automatic door operation is designed using PLC programming to open or close the door when detecting the object.

Last updated: June 26, 2023 2:58 pm
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In this PLC program, automatic door operation is designed using PLC programming to open or close the door when detecting the object. Here the object is nothing but a car.

Contents
Automatic Door OperationInputs and OutputsProgram DescriptionPLC Programming

Automatic Door Operation

The below simulation shows the automatic door system operation.

Automatic Car Door Simulation

Inputs and Outputs

TypeDevice No.Device nameOperation
InputX0Lower limitON when door reaches lower limit.
InputX1Upper limitON when door reaches upper limit.
InputX2In gate sensorON when object approaches the door.
InputX3Out sensorON when object leaves the door.
InputYODoor upMoves up when YO is ON.
OutputY1Door downMoves down when Y1 is ON.
OutputY6LightLit when Y6 is ON.
OutputY7BuzzerSounds when Y7 is ON (Lamp on screen is lit).

Program Description

As the car approaches the entrance, the door moves up. An In-gate sensor X2 is used to detect the car’s presence at the entrance.

The moment the car drives through, the door moves down. An Out-gate sensor X3 is used to detect the car’s presence after crossing the door.

The upward movement of the door halts when the upper limit switch (X1) gets activated.

Similarly, the door’s downward motion stops when the lower limit switch (X0) gets engaged.

The door remains up as long as the car is detected within the range of the entrance (In gate sensor X2) and exit (Out sensor X3).

A buzzer (Y7) buzzes as a signal for the door’s movement.

While the car is within the detection range, between the In gate sensor (X2) and the Out sensor (X3), a light (Y6) remains illuminated.

The status of the door’s movement is indicated by the lighting or extinguishing of four indicator lamps on the control panel.

Manual control of the door is possible. Buttons on the control panel can be pressed to either open (⬆Door up) or close (⬇Door down) the door.

PLC Programming

Automatic Door Operation PLC Programming

Source: Mitsubishi Electric

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