Advanced Programming with Ladder, FBD & Structured Text Course

Editorial Take

As industrial automation continues to evolve, the need for skilled PLC programmers remains high. This course from Packt, hosted on Coursera, offers a focused, technically rigorous path into mastering advanced programming methods used in real-world control systems. With interactive support from Coursera Coach, learners gain more than just syntax—they develop applied logic and problem-solving skills essential in modern engineering roles.

Standout Strengths

• Multi-Language Mastery: The course thoroughly covers Ladder Logic, Function Block Diagram, and Structured Text, aligning with IEC 61131-3 standards. This breadth ensures learners can adapt to various industrial environments where different languages dominate.
• Interactive Coaching: Coursera Coach provides real-time, conversational feedback, helping learners test assumptions and clarify misunderstandings. This feature significantly enhances retention compared to passive video lectures.
• Practical Data Handling: Modules on string manipulation and data conversion address real challenges in automation, such as parsing sensor data or managing recipe parameters in batch processes.
• Modular Programming Emphasis: The course teaches how to build reusable, maintainable code blocks—critical for scaling systems and collaborating in team environments.
• Industry-Aligned Curriculum: Content reflects actual engineering workflows, including simulation-based troubleshooting and logic optimization, preparing learners for real-world tasks.
• Clear Learning Path: The progression from foundational review to advanced implementation ensures a structured journey, minimizing cognitive overload and reinforcing concepts incrementally.

Honest Limitations

• Assumes Prior Knowledge: The course dives quickly into advanced topics without reviewing basic PLC operation. Learners unfamiliar with relay logic or scan cycles may struggle early on.
• Limited Hardware Integration: While software logic is well-covered, the course does not explore physical wiring, sensor interfacing, or communication protocols like Modbus in depth.
• No Permanent Access: Interactions with Coursera Coach are only available during active subscription, limiting long-term reference value for complex topics.
• Niche Audience: The specialized nature of PLC programming means this course won’t appeal to general developers or those outside industrial systems.

How to Get the Most Out of It

• Study cadence: Dedicate 6–8 hours weekly with spaced repetition. Focus on one programming language per module to avoid confusion and build muscle memory.
• Simultaneously build a small automation project (e.g., conveyor control) using all three languages to compare strengths and weaknesses.
• Note-taking: Document each function block and ST snippet with comments and diagrams to create a personal reference library for future use.
• Community: Join Coursera forums and PLC-specific groups to discuss challenges and share debugging strategies with peers and professionals.
• Practice: Use free PLC simulators like LOGO!Soft or Codesys to replicate course exercises and experiment beyond provided examples.
• Consistency: Maintain a regular schedule—even short daily sessions—since programming logic builds cumulatively and gaps disrupt learning momentum.

Supplementary Resources

• Book: 'Programmable Logic Controllers' by William Bolton offers foundational theory that complements the course’s applied focus.
• Tool: Codesys, a free development environment, allows hands-on practice with ST and FBD without requiring physical hardware.
• Follow-up: Explore Coursera’s Industrial IoT or SCADA courses to extend skills into connected systems and data monitoring.
• Reference: The official IEC 61131-3 standard documentation provides authoritative guidance on language syntax and best practices.

Common Pitfalls

• Pitfall: Over-relying on Ladder Logic due to familiarity, while neglecting Structured Text’s efficiency for complex calculations and loops.
• Pitfall: Writing monolithic code blocks instead of modular, reusable functions—leading to maintenance challenges in larger systems.
• Pitfall: Misunderstanding scan cycle behavior, which can cause timing issues in real-time control applications.

Time & Money ROI

• Time: At 12 weeks with consistent effort, learners gain job-relevant skills that can lead to promotions or role transitions in automation teams.
• Cost-to-value: While not free, the investment is justified by the depth of content and interactive coaching, especially for professionals seeking advancement.
• Certificate: The credential adds verifiable value to resumes, particularly when applying for roles in manufacturing or process engineering.
• Alternative: Free YouTube tutorials lack structure and feedback; this course’s guided path with Coach support offers superior learning outcomes.

Editorial Verdict

This course stands out as one of the most technically robust PLC programming offerings on Coursera, particularly due to its integration of interactive coaching and multi-language approach. It fills a critical gap for engineers and technicians aiming to move beyond basic ladder logic into more sophisticated control strategies. The emphasis on data handling and modular design reflects current industry needs, making it highly relevant for automation professionals seeking to modernize their skill set. While not beginner-friendly, it serves as an excellent upskilling tool for those already working in industrial control environments.

However, prospective learners should be aware of its narrow focus and subscription-based access limitations. Those without prior PLC exposure may need to supplement with foundational material before enrolling. Despite these constraints, the course delivers strong value in terms of skill development and practical application. For engineers committed to mastering advanced PLC techniques, this program offers a structured, engaging, and industry-aligned pathway. With consistent effort and supplementary practice, graduates will be well-prepared to tackle complex automation challenges in manufacturing, energy, and process industries.