20 SCL Execution Order Questions
A practical quiz-based SCL article with 20 execution-order questions covering overwrites, timers, state logic, feedbacks, and data typing, designed to help PLC engineers read structured text in the same order…
How To Structure A PLC Project: From Documentation To Commissioning
PLC projects usually become difficult when the engineering development sequence is weak. If development requirements are handled out of order, the code may still run, but the project becomes harder…
Inputs And Outputs Explained
Inputs and outputs are where PLC software meets the real world. This article explains how digital inputs, digital outputs, analog inputs, and analog outputs work in practical terms, without assuming…
Understanding Scan Cycles
PLC code starts making sense once you understand the scan cycle. This article breaks down how cyclic, interrupt, and event tasks interact, where async fits in, and why scan time,…
When to Hire a PLC Consultant vs Training Your Team
When should you hire a PLC consultant, and when is it better to train your own team? This article gives engineering managers a practical framework for weighing cost, timeline, risk,…
Troubleshooting PLC Systems: A Systematic Approach to Finding Faults
Learn systematic PLC troubleshooting methods that work across all platforms. Stop random fixes and start solving faults efficiently with proven diagnostic techniques.
State Machines in PLC Programming: Designing Behaviour Instead of Logic
State machines are one of the most powerful yet misunderstood design patterns in PLC programming. Instead of building control logic around scattered conditions and boolean flags, state-based design focuses on…
Is It Worth Encrypting Your PLC Code? Know-How Protection in Industrial Automation
Engineering teams often implement PLC code protection without genuine need, creating operational headaches rather than security benefits. This article examines when know-how protection makes sense, the hidden costs of unnecessary…
Migrating from Step 7 to TIA Portal: What You Need to Know
Migrating from Siemens Step 7 to TIA Portal is rarely as simple as running a conversion tool. While Siemens provides automated migration utilities, real-world projects often require manual logic restructuring,…
The True Cost of Poor PLC Documentation
Consulting Insight | Liam Bee Why the gap between “it works” and “we understand it” is where the real expense lives. Every automation engineer has inherited a project with no…