33. SCADA vs HMI vs PLC (33 of 41)


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In industrial automation, three terms appear everywhere:

PLCHMISCADA

They are connected, but they are not the same thing.

A PLC controls the machine.An HMI allows the operator to interact with the machine.SCADA supervises, …

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41. Building Confidence in Industrial Automation (41 of 41)


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Industrial automation can feel overwhelming.

There are many areas to understand:

Electrical controlIndustrial electronicsSensorsInstrumentationPLCsLadder logicVFDsMotor controlHMISCADAIndustrial networksRemote I/OSafety systemsTroubleshootingDocumentationBackups

At times, it may feel like:

“I do not know enough.”“There is too much to …

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3. HMI Communications: FactoryTalk Linx, Data Servers, and OPC


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Understanding How the HMI Talks to the PLC

In an industrial HMI system, the screen is only useful if it can communicate with the controller.

The HMI needs to read machine status …

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2. HMI Architecture: PLC, Driver, Tags, and Screens


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Understanding How an Industrial HMI Connects the Operator to the Machine

In the previous post, we explained what an industrial HMI is and why it is important in automation. Now we …

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1. What Is an Industrial HMI?


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A Beginner-Friendly Introduction for Industrial Automation Technicians

In industrial automation, an HMI stands for Human-Machine Interface. It is the screen, panel, or computer-based application that allows an operator, technician, or engineer …

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