PLC programming · Free · ₹0
CODESYS and IEC 61131-3 Programming
The vendor-neutral PLC platform: ladder, function blocks, structured text, CFC and SFC, with Factory I/O projects and a visualization at the end.
What you will learn
Install CODESYS and create a project, program ladder from contacts to latching and gates, use TON, TOF, TP, CTU, CTD and CTUD, tell functions from function blocks, write structured text with IF, CASE, loops, timers, edges, structures, functions and function blocks, build CFC and SFC programs, and put a visualization on top.
- Explain why CODESYS sits inside so many PLC brands
- Build ladder from NO/NC contacts to gates, latching and exercises
- Use the IEC timers and counters and read their pins
- Tell a function from a function block and write both
- Write structured text with IF, CASE, FOR, WHILE, REPEAT, edges and structures
- Build CFC and SFC programs for a sorting station and a warehouse
- Bind a visualization to program variables
Course content
19 modules · 55 lessons · 12h 9m
In order, at whatever pace suits you. Each module ends with a practice task that builds on the last, and a short quiz.
- 01CODESYS: What It Is and the First Project4 lessons34m
- 02Contacts, Coils and NO/NC4 lessons40m
- 03Logic Gates3 lessons35m
- 04Boolean Expressions to Ladder3 lessons26m
- 05Memory Bits and Latching4 lessons36m
- 06Toggle Switches and Solenoids4 lessons35m
- 07Pumps, LEDs and Multi-Output Exercises5 lessons43m
- 08Ladder Instructions in Depth2 lessons1h 20m
- 09Timers: TON, TOF and TP1 lesson35m
- 10Counters: CTU, CTD and CTUD1 lesson49m
- 11Functions versus Function Blocks1 lesson50m
- 12FBD and Structured Text: First Steps4 lessons31m
- 13ST Control Flow: IF, CASE and Loops5 lessons33m
- 14ST: Timers, Counters, Edges and Structures3 lessons31m
- 15ST: Functions, Function Blocks and Utilities7 lessons52m
- 16CFC: Continuous Function Chart1 lesson39m
- 17SFC: Sequential Function Chart1 lesson1h 2m
- 18Visualization1 lesson18m
- 19Final Assessment1 lesson9m
Requirements
- Who it is for
- Beginner to intermediate. Ladder first, then the text and graphical languages.
- Software
- CODESYS Development System (free from the CODESYS Store) with the soft PLC
- Hardware
- None. The soft PLC runs every exercise.
CODESYS and IEC 61131-3 Programming at a glance
CODESYS and IEC 61131-3 Programming is a free, self-paced online plc programming course from EDWartens India with 19 modules, 12h 9m of video lessons, written notes, practice tasks and assessments, and an optional verifiable certificate.
- Price
- ₹0, free for good. No trial, no card.
- Format
- 19 self-paced modules, 12h 9m of video, written notes, a quiz per module and a final assessment.
- Level
- Beginner. Beginner to intermediate. Ladder first, then the text and graphical languages.
- Brand
- CODESYS
- Software
- CODESYS Development System (free from the CODESYS Store) with the soft PLC
- Hardware
- None. The soft PLC runs every exercise.
- Certificate
- Optional EDWartens Certificate of Completion, ₹700, verifiable by code. Not a vendor credential.
- Video lessons by
- Instrumentation Tools, plcgoods, Tohid Alizadeh, RealPars (independent creators, credited below)
- Language
- English
A shareable EDWartens certificate
Finish every module and pass the final assessment, and you can buy a certificate for ₹700. It carries a unique verification code on a public page anyone can check, so it stands up when a recruiter looks it up.
- Add it to your LinkedIn profile in one click
- Link it from a CV or portfolio, the URL is permanent
- Publicly verifiable by code, not a PDF anyone can edit
- Issued by EDWartens India, the training centre itself
The course itself stays free whether or not you ever buy one.
Stuck? Ask a practising engineer
A free course usually means a comment section and hope. This one does not. Every module has an Ask-your-trainer panel that reaches the same engineers who teach our paid programme: people who commission panels for a living, not moderators.
- Questions answered in the context of the module you are on
- The same engineers who teach the AEP programme
- Career tools, CV help and public job listings included
- Your progress and notes stay in your account for good
Pairs well with
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PLC programming · FreeAllen-Bradley RSLogix 500 and MicroLogixThe MicroLogix and SLC 500 on real hardware: file-based addressing, every instruction group, analog scaling, faults and forces, in RSLogix 500.Learning paths with this course
- IEC 61131 and software PLCs · 3 coursesCODESYS, TwinCAT and Automation Builder: structured text, PC-based control and the IEC languages behind hundreds of PLC brands.
Common questions
Is CODESYS free?
Yes. The CODESYS Development System and its soft PLC for testing are free from the CODESYS Store. Runtime licences for real hardware are separate and not needed here.
Which PLC brands use CODESYS?
Schneider Machine Expert, ABB Automation Builder, Beckhoff TwinCAT, WAGO, Festo, Eaton and many more are CODESYS-based, so what you learn here transfers directly.
Do I need Factory I/O?
No. The projects are shown so you can follow the logic; every practice task runs on the soft PLC.
Do I need to know ladder first?
No. The first seven modules teach ladder from scratch before structured text starts.
What computer do I need?
A 64-bit Windows 10 machine with 8 GB of RAM. CODESYS is Windows-only.
Is the course really free?
Yes. Every module, practice task and assessment. You create an account so your progress is saved and the assessments can be marked. The certificate is the only paid item, and only if you want it.
What certificate do I get, and is it a CODESYS GmbH qualification?
An EDWartens Certificate of Completion, issued when you pass the final assessment, with a verification code anyone can check. It is not a CODESYS GmbH credential and is never described as one.
Who made the video lessons?
The creators named in the Credits block at the foot of this page, on their own YouTube channels. EDWartens did not make the videos and the creators are not affiliated with EDWartens. What EDWartens wrote is the study plan, the notes, the practice tasks and the assessments.
Credits
Who made the video lessons
The video lessons in this course were created by the people below, not by EDWartens. Every lesson streams from its creator's own YouTube channel; EDWartens neither hosts nor sells that footage, and the creators are not affiliated with EDWartens and do not endorse this course. What EDWartens wrote is the study plan, the notes, the practice tasks and the assessments.
- Instrumentation Toolsthe CODESYS PLC training series
- plcgoodsthe CODESYS course with Factory I/O projects
- Tohid Alizadehthe Structured Text in CODESYS series
- RealParsthe CODESYS installation lesson
If you are one of these creators and would like a lesson removed or credited differently, write to info@wartens.com.