PLC Programming With Ladder Logic > Getting Started with RS Micrologix

How to do PLC Programming using Ladder Logic

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Ladder logic programming is a popular programming language in the automation industry. It is a powerful way to program because it is easy to use and has many features that can be used for common tasks. It is specialized for the needs of automation engineers, and it’s been around for a long time. It has a graphical interface where one can make a ladder diagram with rungs connected by lines. Each rung represents an action, and the line represents the order in which they are executed. The ladder diagram will have three parts: input terminals at the top, output terminals at the bottom, and logic between them which define what happens when you press a button on your remote control or turn on your washing machine's start button.

A ladder diagram is a visual programming language that is widely used in industrial electrical control systems. It consists of symbols that represent various components, such as the programmable electrical switch, relay, timer, and counter. The components are connected with lines to form a schematic diagram that represents the logic of an electrical control system.

Ladder logic diagrams are a sequence of symbols with two different types of lines. There are open circuits which are the lines that extend beyond the end of the box. These represent input or output functions. And then there are closed circuits that end at the end of the box, these represent internal functions that don't affect an external circuit. There are three different types of ladder logic diagrams: Sequential circuit, Feedback circuit, and Simultaneous Circuit. The Sequential Circuit has outputs feeding back to their corresponding inputs in a consecutive order. The Feedback Circuit has outputs feeding back to their corresponding inputs at some point after they have been used as an input to generate an output for one stage in the process.

Instructions in Ladder Logic are written in a language called Ladder Logic.
Instructions in Ladder Logic are written in a language called Ladder Logic. To write an instruction, first identify the input and the output of the instruction. Inputs can be ladder rungs or text values from a programming tool such as Microsoft Excel. Outputs can be ladder rungs or text values from a programming tool such as Microsoft Excel. For example, if you wanted to add two numbers together and output the result, you would have an input for each number and an output for where to put the result. The first thing you do is scan the logic diagram from left to right, looking for any inputs that share a common connector.

Ladder logic is a programming language, as such it is structured as a set of input and output commands which are executed in sequence.
Inputs: Inputs are the values that ladder logic uses to determine the next step.
Outputs: Outputs are what ladder logic produces as its result.

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Course Content

  1. Introduction to PLC Programming
    3m 49s

  1. How to do PLC Programming using Ladder Logic
    15m 14s
  2. Installation of RSLogix Micro Starter Lite
    12m
  3. Elements of RSLogix Micro Starter Lite
    15m 32s

  1. How to Programme and Run the Logic
    19m 14s
  2. PLC Programming of OR Logic Gate
    8m 24s
  3. PLC Programming of AND and NOT Logic Gate
    12m 48s
  4. PLC Programming of NAND,NOR and XOR Logic Gate
    16m 28s

  1. Ladder Logic of Push Button Latching
    14m 16s
  2. Ladder Logic of Interlock Circuit
    21m 25s
  3. Trick to Optimize Use of I-O in Ladder Logic
    5m 33s
  4. Ladder Programming of Motor Operation
    13m 58s
  5. Ladder Logic of Motor Forward Reverse Interlock Protection
    20m 35s

  1. How to Use Timer in Ladder Logic
    17m 39s
  2. On Delay Timer in Ladder Diagram
    8m 39s
  3. Off Delay Timer in Ladder Diagram
    11m 15s
  4. Retentive Timer in Ladder Diagram
    12m 11s
  5. Star to Delta Motor Starter in Ladder Logic
    28m 2s
  6. Counter-up with On Delay Timer Logic
    9m 2s
  7. Countdown with Reset Function in Ladder Logic
    12m 31s
  8. Up-Down Counter Logic with Application in Ladder Logic
    9m

  1. Comparator LIM Block in Ladder Logic
    7m 35s
  2. Comparator EQU,LES,LEQ,NEQ,GRT and GEQ Block in Ladder Logic
    19m 34s
  3. Math Operations in Logic
    30m 16s
  4. Move Blocks in Ladder Logic
    10m 3s
  5. Logical Gate Blocks in Ladder Logic
    22m 5s

  1. Decimal - BCD Conversions in Ladder Logic
    15m 41s
  2. Bit Shift Left and Right in Ladder Logic
    14m 1s
  3. Scale Parameters
    20m 41s
  4. Hacks for Ladder Logic
    10m 11s

  1. Water Tank Filling Control Logic
    27m 57s
  2. Chemical Mixing Process Logic
    33m 11s
  3. Traffic Light Signal Control Logic Part - 1
    23m 41s
  4. Traffic Light Signal Control Logic Part - 2
    36m 46s
  5. Elevator Control Logic
    01h 9m 40s

  1. Assignment of PLC Programming With Ladder Logic
    3m 16s

  1. Interview Questions
    7m 9s

  1. Career Guideline
    2m 42s
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