Feature: 12-Lesson Curriculum

From button-to-light to PLC professional.

A structured path through the skills every PLC programmer needs — written for people who learn by doing, not by reading PDFs. Every lesson is paired with a live simulator exercise.

First 6 lessons free. No credit card required.

All 12 lessons

Each lesson takes 20–35 minutes and ends with a graded exercise in the live simulator.

1

PLC Fundamentals

Free
~20 min

What a PLC is, what it does, and how it fits into an automation system. Scan cycle, I/O modules, CPU, memory map.

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2

Ladder Logic Basics

Free
~25 min

Contacts, coils, and rungs. How ladder logic maps from a relay circuit. Writing your first motor start/stop program.

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3

Timers & Counters

Free
~25 min

TON, TOF, CTU, CTD. Preset vs accumulator. Using timers to delay motor start and counters to count parts.

Start →
4

Seal-in Rungs

Free
~20 min

How a seal-in (self-latching) rung works. Why order matters. The classic start/stop motor control circuit with latch.

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5

Latching & Unlocking

Free
~25 min

SET/RESET coils vs seal-in rungs. When each is the right choice. Latch coil hazards and how to avoid them.

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6

Sensor Inputs

Free
~30 min

Proximity, photoelectric, and inductive sensors. PNP vs NPN wiring. How sensor type maps to contact type in ladder logic.

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7

Motor Control Circuits

Pro
~30 min

Star-delta starter, overload relay, forward/reverse interlocking. Full motor control program from contactors to PLC.

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8

Sequencers

Pro
~25 min

Step-based control using integer comparison. Building a 4-step conveyor sequence that pauses and restarts reliably.

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9

Analog I/O Basics

Pro
~30 min

Scaling raw counts to engineering units. 4–20 mA loop wiring. Reading a pressure sensor and triggering an alarm.

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10

PID Control

Pro
~35 min

Proportional, integral, and derivative explained. Tuning a PID loop for a temperature controller in the simulator.

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11

Fault Finding

Pro
~30 min

Systematic fault-finding using scan-cycle highlight, variable table, and cross-reference. Three injected-fault exercises.

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12

Structured Text

Pro
~35 min

IEC 61131-3 ST syntax. IF/THEN/ELSE, FOR loops, function blocks. Rewriting a ladder program as Structured Text.

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What each lesson includes

Explanation

Plain-language concept explanations written for technicians and engineers — not textbook academics.

Live exercise

Write real ladder logic against a running machine simulation. Automated test cases tell you when you pass.

Scan-cycle walkthrough

Slow down the scan and watch each rung execute step by step. See why your logic works — or why it doesn't.

Start the curriculum today — free.

First 6 lessons free. No credit card required.

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Competency and practice field guide

PLC training curriculum feature: practice plan

Direct answer

The learner can choose the next competency by prerequisite, complete a runnable task and retain evidence of behavior, diagnosis and transfer boundaries.

Written for self-directed learners, instructors and training managers planning a route from Boolean I/O through timing, sequence, troubleshooting and integrated automation.

an adult learner explaining PLC and machine evidence to an assessor in a vocational automation laboratory while studying sequenced PLC curriculum, practice and mastery evidence
System map / 02

NODE 01observable

Scope

Learner goal, prerequisite knowledge, competency sequence, practice ratio, scenario, assessment, feedback, remediation, accessibility, portfolio evidence and physical transfer.

NODE 02observable

Signal path

Competency statement through lesson, worked example, runnable task, changed case, result, explanation, assessor or self-review and next decision.

NODE 03observable

Baseline practice

One learning unit completed with a successful normal case and a changed case explained without copying.

NODE 04observable

Edge cases

Skipped prerequisite, repeated failure, copied solution, accessibility barrier, long gap, unfamiliar interface, partial completion and retest.

NODE 05observable

Fault practice

A prerequisite, explanation, practice, task, assessment, feedback, remediation, accessibility or transfer gap.

NODE 06observable

Transfer to the job

Portfolio artifacts reviewed and paired with supervised electrical, instrument and target-controller practice.

Answer surface / 07

What order should a PLC curriculum follow?

Begin with I/O and scan truth, then start-stop logic, timers, counters, state, sensors, motors, analog values, HMI, networks and troubleshooting.

How do I know a PLC lesson is mastered?

The learner should predict and produce the required behavior, solve a changed or faulted case and explain what remains unproven outside simulation.