PLC Ladder Logic Basics For Beginners With A Working Conveyor

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  • เผยแพร่เมื่อ 24 ธ.ค. 2022
  • Ladder logic is a programming language used in industrial automation systems, such as those found in manufacturing plants. It is a graphical representation of a program, with symbols and lines representing logical statements and actions. Allen-Bradley is a brand of programmable logic controllers (PLCs) that uses ladder logic to control industrial processes.
    For beginners learning ladder logic, a good starting point is understanding how it is used to control a conveyor system. A conveyor system consists of a series of rollers or belts that move materials from one location to another. It is commonly used in manufacturing and material handling applications.
    To control a conveyor system using ladder logic, we need to first understand the inputs and outputs of the system. Inputs are signals that are received by the PLC, such as button presses or sensor readings. Outputs are signals that are sent by the PLC, such as turning on a motor or activating a solenoid valve.
    Next, we need to determine the logic of the system. For example, if we want the conveyor to start when a button is pressed and stop when a sensor detects an object, we would create a ladder logic program that reads the button press input and the sensor input. If the button is pressed and the sensor is not detecting an object, the program will send an output signal to start the conveyor. If the sensor detects an object, the program will send an output signal to stop the conveyor.
    To create the ladder logic program, we use symbols and lines to represent the inputs, outputs, and logic of the system. A common symbol for an input is a square, and a common symbol for an output is a circle. Lines are used to connect the symbols and represent the logic of the program.
    Here is an example of a simple ladder logic program for a conveyor system:
    [Input] [Output]
    [Button]--[Conveyor]
    [Sensor]--[Stop]
    In this program, the input symbol on the left represents the button press, and the output symbol on the right represents the conveyor motor. The line connecting the two represents the logic that if the button is pressed, the conveyor will start. The input symbol below the button represents the sensor, and the output symbol below the conveyor represents the stop signal. The line connecting the two represents the logic that if the sensor detects an object, the conveyor will stop.
    Ladder logic can become more complex as the system becomes more sophisticated, but this basic example illustrates the concept of using inputs, outputs, and logic to control a conveyor system using Allen-Bradley PLCs and ladder logic. With practice and a thorough understanding of the principles of ladder logic, beginners can confidently control and automate industrial processes using this powerful programming language.
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ความคิดเห็น • 37

  • @ShaneWelcher
    @ShaneWelcher  ปีที่แล้ว +1

    Subscribe: mmini.me/Subscribe-4-Updates
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    • @spidergt80
      @spidergt80 ปีที่แล้ว +1

      Another great video , Thanks. Can you make some videos with scaling 4-20 mA devices explaining the linear equation..using math instructions and/scales

  • @wildfilms2718
    @wildfilms2718 ปีที่แล้ว +6

    Great video! Would love to see more basics like this. 👍🏻

    • @ShaneWelcher
      @ShaneWelcher  ปีที่แล้ว +2

      Glad to help, use the search tab on this channel & type in keywords that you would like to see.
      There are over 300 videos

  • @lanthonyperdum6430
    @lanthonyperdum6430 ปีที่แล้ว +4

    Great information…Thanks for the basics once again !!!

  • @Abdiedits_
    @Abdiedits_ ปีที่แล้ว +2

    Love the videos. Keep it going please and thank you 🙏

  • @BigMrToe
    @BigMrToe 6 หลายเดือนก่อน +3

    Was checking out that Allen Bradley training website. Is the 19 dollars a month for the logic 5000 simulator? What am I getting? I would like to sign up. I some questions.

    • @ShaneWelcher
      @ShaneWelcher  6 หลายเดือนก่อน

      Visit my training site and watch some of the preview videos to make sure its a good fit for you

  • @Maverickautomations
    @Maverickautomations ปีที่แล้ว +1

    Great 👍

  • @kevin-cr9gt
    @kevin-cr9gt 6 หลายเดือนก่อน +1

    What software is this? Or do you know of any free plc software programs available to learn on?

    • @ShaneWelcher
      @ShaneWelcher  6 หลายเดือนก่อน

      EasyPLC machine simulator, email me at Shane@OnlinePLCsupport.com

  • @sjo627
    @sjo627 ปีที่แล้ว +2

    Rung 0 is to start the process when the conveyor is not moving in either direction and both PE1/PE2 are in a low state - is this correct?

    • @ShaneWelcher
      @ShaneWelcher  ปีที่แล้ว

      Yes

    • @Countercommie
      @Countercommie ปีที่แล้ว +2

      Thank you for asking this question. I was struggling to understand the purpose of the TOF timer. Reading the comments and seeing your question brought me to the answer.

  • @Mak_Patel03
    @Mak_Patel03 ปีที่แล้ว +2

    Hi Sir, I was wondering what kind of software you have used for this program?

    • @ShaneWelcher
      @ShaneWelcher  ปีที่แล้ว +3

      EasyPLC Machine Simulator
      Visit www.nirtec.com/purchase-price
      When you check out use code
      Shane_EasyPLC
      For a discount.
      I use that software with Rockwell Automation's Studio 5000.
      Studio 5000 does not come with EasyPLC

    • @Mak_Patel03
      @Mak_Patel03 ปีที่แล้ว +1

      ​@@ShaneWelcher Yes, sure. Thank you!

    • @Mak_Patel03
      @Mak_Patel03 ปีที่แล้ว +1

      Is PE1 start pushbutton and PE2 stop pushbutton?

    • @ShaneWelcher
      @ShaneWelcher  ปีที่แล้ว

      @@Mak_Patel03 in the example I wrote, if no PE is active then the conveyor automatically starts to get the system active because no pushbuttons or HMI controls

  • @magerius
    @magerius 2 หลายเดือนก่อน +1

    Are you using Factory I/O ?

    • @ShaneWelcher
      @ShaneWelcher  2 หลายเดือนก่อน

      No, EasyPLC Machine Simulator

  • @JaykeSapalaran-iq3qs
    @JaykeSapalaran-iq3qs 9 หลายเดือนก่อน +1

    Great video information 👍❤ thank you for sharing your knowledge and experience 🇵🇭🫡🫡🫡🫡

    • @ShaneWelcher
      @ShaneWelcher  9 หลายเดือนก่อน +1

      Glad to help

  • @sboyer087
    @sboyer087 3 หลายเดือนก่อน

    Have you ever conducted a line balance on actual machinery?

    • @ShaneWelcher
      @ShaneWelcher  3 หลายเดือนก่อน

      Line balance?

    • @sboyer087
      @sboyer087 หลายเดือนก่อน

      the sum of all task times divided by the number of workstations.

    • @sboyer087
      @sboyer087 หลายเดือนก่อน

      @@ShaneWelcher Line balance efficiency
      The line balance efficiency is a measure of how well the production line is meeting its takt time goal. It is calculated by dividing the total process time by the cycle time, and then multiplying by the number of operations, and then multiplying by 100%

  • @chazchampion4281
    @chazchampion4281 หลายเดือนก่อน +1

    Wheres the E stop ?

    • @ShaneWelcher
      @ShaneWelcher  หลายเดือนก่อน

      It's just a simple example, there is no push button station.
      Did you watch the video and listen to what I said?

    • @Honey_bee098
      @Honey_bee098 5 วันที่ผ่านมา

      It goes on forever

    • @ShaneWelcher
      @ShaneWelcher  5 วันที่ผ่านมา

      @@Honey_bee098 Again, it's an example of no push buttons.
      It's meant to show how EasyPLC machine simulator works

    • @Honey_bee098
      @Honey_bee098 5 วันที่ผ่านมา +1

      @@ShaneWelcher I know I was kidding, I was actually watching this video to get a refresher on basic ladder logic to prepare for my exam. Thanks

  • @liaqatali-ht3it
    @liaqatali-ht3it ปีที่แล้ว +1

    Thanks