It's a decent introduction. Could benefit from more diverse examples and a slightly better flow between modules.
SCL Programming for Siemens PLCs in TIA Portal
Learn to write structured, text-based code for Siemens PLCs using SCL in TIA Portal to simplify complex math, data handling, and industrial automation tasks.
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About this course
As industrial automation systems become more complex, traditional ladder logic can become difficult to manage and scale. Transitioning to Structured Control Language (SCL) allows you to write clean, text-based PLC programs that handle complex math, data processing, and state machines with ease.
This text-based course provides a clear, step-by-step pathway to mastering SCL within the TIA Portal environment. You will transition from basic syntax to building modular, structured PLC applications using industry-standard programming patterns.
What you'll learn:
- Understand the fundamental syntax and structure of SCL compared to traditional graphical languages
- Configure and manipulate data using arrays, structures, and custom data types (UDTs)
- Implement logical operations, mathematical calculations, and conditional statements in SCL
- Develop modular code using Function Blocks (FBs), Functions (FCs), and Data Blocks (DBs)
- Apply modern structured programming practices to improve code readability and maintainability
- Analyze and debug SCL code using simulated testing workflows
You will start by exploring core PLC programming concepts and SCL syntax before moving on to practical control logic, data handling, and modular block design. The written lessons guide you through conceptual explanations, structured code snippets, and practical exercises designed to build your confidence.
This course is designed for beginner PLC programmers, maintenance technicians, and automation engineers who want to expand their skills beyond ladder logic. No prior experience with SCL is required, though a basic understanding of general PLC concepts is helpful.
Start reading today to elevate your industrial automation skills with modern SCL programming.
Course contents
6 modules · 30 lessons · 3h
1
Introduction to SCL
Understand the purpose of SCL and the basic editor environment.
- Why SCL?
Transitioning from graphical to text-based programming for complexity.6 min - SCL vs. Ladder Logic
Comparing visual rungs to structured text lines.6 min - The SCL Editor in TIA Portal
Navigating the interface, interface area, and code region.6 min - Basic Syntax Rules
Understanding semicolons, case sensitivity, and block structure.6 min - Comments and Regions
Organizing code visually using comments and foldable regions.6 min
2
Data and Basic Operations
Perform calculations and logical checks using SCL syntax.
- Variables and Data Types
Using BOOL, INT, REAL, and STRING in SCL.6 min - Math in SCL
Writing arithmetic expressions (+, -, *, /, MOD).6 min - Logical Operators
Using AND, OR, XOR, and NOT for bitwise logic.6 min - Comparison Expressions
Using equal, not equal, and range comparisons.6 min - Assignment Statements
The ':=' operator and moving data between variables.6 min
3
Control Flow and Loops
Control program execution using conditional logic and iterations.
- IF...THEN Statements
Executing code based on a single boolean condition.6 min - ELSIF and ELSE
Handling multiple alternative conditions in one block.6 min - CASE Statements
Efficient multi-way branching using integer selectors.6 min - FOR Loops
Repeating code a fixed number of times for data processing.6 min - WHILE and REPEAT Loops
Conditional loops that run until a criteria is met.6 min
4
Advanced Data Handling
Manage complex data using arrays, structures, and UDTs.
- Working with Arrays
Declaring and accessing indexed lists of data.6 min - Dynamic Array Indexing
Using variables as indexes within loops.6 min - Structures (STRUCT)
Grouping different data types into a single named object.6 min - User Defined Data Types (UDTs)
Creating reusable data templates for the whole project.6 min - Applying UDTs in SCL
Passing UDTs to functions for standardized data handling.6 min
5
Modular Programming
Build reusable code blocks (FCs and FBs).
- Creating Functions (FCs)
Writing stateless logic blocks in SCL.6 min - Function Blocks (FBs)
Building blocks with internal memory (static variables).6 min - Instance Data Blocks
How FBs store their data in dedicated DBs.6 min - Global Data Blocks (DBs)
Accessing global project data from within SCL code.6 min - Block Parameters
Defining Input, Output, and InOut interfaces for SCL blocks.6 min
6
Best Practices and Debugging
Ensure code quality and fix errors using TIA tools.
- Clean Code Practices
Naming conventions and formatting for maintainability.6 min - Designing State Machines
Using CASE statements to manage complex machine sequences.6 min - Monitoring and Debugging
Using the 'Monitor' mode to see live values in SCL.6 min - Simulation with PLCSIM
Testing SCL logic without physical hardware.6 min - Refactoring Ladder to SCL
When and how to convert existing logic to text-based.6 min
Final project
Automated Mixing Tank Controller
Design a complete SCL-based control system for a mixing tank that handles multiple ingredients, monitors levels using arrays, and uses a state machine for the sequence.
What you'll get
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Short & focused
3h of practical content
Certificate of completion
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SCL Programming for Siemens PLCs in TIA Portal
Skills demonstrated
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Behavioral pattern analysis
Foundational
1.2 hrs
✓
Decision-architecture frameworks
Proficient
1.4 hrs
✓
A/B test design
Proficient
1.7 hrs
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SCL Programming for Siemens PLCs in TIA Portal
Page 2 of 2
Performance detail
Coursework summary
Lessons completed
14 / 14
Practice questions
26 / 28
Assignments submitted
4 (avg 4.5 / 5)
Capstone project
Reviewed — 4.6 / 5
Total practice
6.2 hrs
Performance benchmark
Cohort rank
Top 12% of 1,625
Time to completion
11 days (median: 22)
Mastery score
91 / 100
Practice-question score
94%
Skill verification
Verified Skill Path
Reviews (8)
Good introduction. I appreciated the clear steps, although some of the later modules could have used more examples.
Really enjoyed this. The structure made it easy to follow along, and the instructor's energy kept me engaged. So applicable to real-world scenarios.
Decent introduction. The structure was logical, but I wish there had been more hands-on practice beyond the basic examples.
Exceeded my expectations! The structure was logical, and the real-world scenarios really helped cement the learning. Great value.
It was a pretty good course overall. Some parts moved a bit fast, but the examples were generally helpful. Worth the investment.
Found it quite informative. The structure was logical, though some of the more advanced topics could have benefited from more detailed examples. Still worth it.
This was a good introduction. The structure is logical, and it covers the basics effectively. Might be too introductory for advanced learners.
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