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If the PLC program is lost, outdated, modified incorrectly, or not documented, troubleshooting becomes …
Read MoreA PLC system can run for years with very few problems, but that does not mean it should be ignored.
A PLC panel needs preventive maintenance just like motors, gearboxes, sensors, …
Read MorePLC Safety Basics
In industrial automation, safety is not just another PLC input.
Safety devices are used to protect people from hazardous machine motion, stored energy, electrical hazards, pneumatic movement, hydraulic force, …
Read MoreIntroduction
Every industrial automation system is built on four fundamental electrical concepts:
Voltage
Current
Resistance
Power
These four concepts explain why a sensor works, why a relay energizes, why a motor turns, and why electrical components …
Read MoreIndustrial automation depends completely on electricity.
A PLC cannot read a sensor without electrical power. A VFD cannot control a motor without a three-phase supply. A solenoid valve cannot move without …
Read MoreIn 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 MoreA Basic Introduction for Automation Technicians
Introduction
In industrial motor control, we often work with contactors, overload relays, motor starters, VFDs, and three-phase AC motors. These systems are excellent for running motors …
Read More
33. PLC Programming Best Practices: Structure, Tags, Comments, and Troubleshooting ( 33 of 35 )
PLC Programming Best Practices
A PLC program should not only make the machine run.
A good PLC program should also be:
Easy to understand
Read MoreEasy to troubleshoot
Easy to modify
Easy to document
Easy to recover
Safe to …