33. SCADA vs HMI vs PLC (33 of 41)
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, …
Read More34. Industrial Networks for Automation Technicians (34 of 41)
Modern industrial automation depends heavily on communication networks.
Years ago, many devices were connected mostly with hardwired signals.
Example:
PLC output → VFD start inputVFD relay output → PLC input
That still exists today, …
Read More35. IP Addressing Basics for Industrial Automation (35 of 41)
Industrial Ethernet is everywhere in modern automation.
PLCs, HMIs, VFDs, remote I/O racks, vision cameras, SCADA computers, robots, and industrial switches all need to communicate reliably.
For that communication to work, each …
Read More36. Industrial Network Troubleshooting for Automation Technicians (36 of 41)
Modern industrial machines depend on communication.
A PLC may need to communicate with:
HMIVFDsRemote I/OSCADAServo drivesVision camerasBarcode readersOther PLCsIndustrial switchesHistorian servers
When communication fails, the machine may stop, lose control, show faults, or …
Read More37. Remote I/O in Industrial Automation (37 of 41)
In many industrial machines, not all inputs and outputs are wired directly to the main PLC panel.
Instead, many systems use Remote I/O.
Remote I/O allows input and output modules to be …
Read More38. VFD Communication in PLC Systems (38 of 41)
A VFD, or Variable Frequency Drive, controls motor speed, direction, acceleration, deceleration, torque, and protection.
In older or simpler systems, a PLC may control a VFD with hardwired signals.
Example:
PLC Output → …
Read More39. Industrial Ethernet Switches in Automation Systems (39 of 41)
Industrial Ethernet switches are one of the most important parts of modern automation networks.
A switch connects devices such as:
PLC
HMI
VFD
Remote I/O
SCADA workstation
Vision camera
Robot controller
Servo drive
Barcode scanner
Engineering laptop
Historian server
A simple way to …
Read More40. OT Network Documentation and Backup Strategy (40 of 41)
In industrial automation, troubleshooting is not only about knowing PLCs, HMIs, VFDs, sensors, motors, and networks.
A strong technician also needs something very practical:
DocumentationBackupsLabelsIP address listsDevice recordsConfiguration files
When production is down, …
Read More41. Building Confidence in Industrial Automation (41 of 41)
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 …
Read More1. FANUC Teach Pendant Basics: How to Navigate Without Getting Lost
Introduction
For many automation technicians, the first challenge with a FANUC robot is not the robot arm itself. The real challenge is the Teach Pendant.
When a robot stops in production, the …
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