28. HMI Basics for PLC Technicians ( 28 of 35 )


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An HMI, or Human Machine Interface, is the screen that allows operators and technicians to interact with a machine or process.

A PLC controls the machine, but the HMI gives the …

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30. PLC Backups, Documentation, and Version Control ( 30 of 35 )


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In industrial automation, a PLC program is not just a file.

It is the brain of the machine.

If the PLC program is lost, outdated, modified incorrectly, or not documented, troubleshooting becomes …

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32. HMI Design & Alarm Management in Industrial Automation (32 of 41)


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In industrial automation, the PLC does NOT operate alone.

The real interaction happens through the HMI (Human Machine Interface).

And a bad HMI design can turn a simple machine into:

A confusing systemA …

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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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