Download Programming Logic controllers book

Many control techniques are available for control. Early control systems relied on mechanisms and analog electronics to build controlled systems. 

Most modern controllers use a computer or microcontroller to achieve control. The most flexible of these controllers is the PLC (Programmable Logic Controller).

 

PLC Features :
• PLC features can be concluded in the following:
• They are rugged, withstand industrial environment, such as heat, humidity,  mechanical shocks and vibrations
• The interfacing for inputs and outputs is inside the controller
• They are easily programmed
• PLC is capable of both logic and PID control. 

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