PLC Counters Explained with Examples

PLC Counters Explained with Examples

In industrial automation, Programmable Logic Controllers (PLCs) are vital for managing machines and processes. Among their key functions is counting tracking events, pulses, or signals from inputs. PLC counters act as digital versions of mechanical …

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Redundancy in PLC systems

Redundancy in PLC systems

A single fault in a traditional Programmable Logic Controller (PLC) can bring production to a standstill. This may lead to a considerable financial loss and posing serious safety hazards. To prevent these consequences, many industries …

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Best Free PLC Software for Beginners

Best Free PLC Software for Beginners

A programmable logic controller (PLC) is a small industrial computer used to automate processes in manufacturing and industrial environments. Learning how to program a PLC can seem intimidating, especially because most commercial tools are expensive …

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What is a PLC Input Module?

What is a PLC Input Module?

Programmable Logic Controllers (PLCs), are the heart of modern automation. They control machines, manage processes, and keep factories running smoothly. One of the most important parts of a PLC system is the input module.  Without …

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What is Hot-Swapping in PLCs?

What is Hot-Swapping in PLCs?

Hot-swapping is the ability to replace or insert components in a system while it is still running and powered. This means there is no need to turn OFF the system or interrupt the process. In …

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Best PLC Brands Compared

Best PLC Brands Compared

Programmable Logic Controllers (PLCs) act as the central command system, they collect data from sensors, process control logic, and trigger actions that keep machines and production lines running. From automotive plants to food processing facilities, …

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PLC in Elevators – How It Works

PLC in Elevators – How It Works

Modern elevators rely heavily on Programmable Logic Controllers (PLCs). A PLC is a digital control device that acts as the main “brain” of the elevator system. It processes signals from buttons, switches, and sensors.  It …

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Differences between SCADA, HMI, and PLC

Differences between SCADA, HMI, and PLC

In industrial automation, SCADA, HMI, and PLC are fundamental concepts that engineers, technicians, and operators encounter on a daily basis. Even though these three terms are often mentioned together and sometimes mistakenly used interchangeably, they …

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What is Scan Time in PLCs?

What is Scan Time in PLCs?

A Programmable Logic Controller (PLC) is a specialized computer used in industrial applications. It is designed specifically to survive in harsh industrial environments and to control machines and processes reliably.  The PLC works as the …

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