output refresh

PLC is Not a Black Box! Understand These Three Steps to Master It

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PLC is Not a Black Box! Understand These Three Steps to Master It

When faced with a brand new PLC, do you feel like you are confronting a silent black box? Once the program is loaded, it seems to act according to your will, which appears magical. But do you know what kind of endless “scan-decision-execute” cycle is taking place inside the moment it is powered on? Many … Read more

The PLC Workflow: Only Three Steps, Yet 90% of Engineers Are Left Behind!

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The PLC Workflow: Only Three Steps, Yet 90% of Engineers Are Left Behind!

Introduction The PLC is known as the “nerve center” of modern factories; however, its workflow consists of only three steps: input sampling, program execution, and output refreshing. Yet it is the subtle differences in these three steps that create a gap between novices and experienced engineers, causing 90% of engineers to hesitate. 1. Input Sampling: … Read more