PLC Hardware Components

🎥 In industrial automation, if you want to count yourself as a PLC expert, you need to be familiar with the most essential PLC components known as PLC hardware. You should have a basic understanding of the physical components that make up a PLC system, and you should know each one of the PLC hardware components is designed to perform a specific function.

By watching this video, you’ll get the answer to these questions:
- What is the PLC CPU module?
- What is the PLC function module?
- What is the PLC power supply module?
- What are the PLC input/output modules?
- What is the PLC communication module?
- What are the PLC hardware components?

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💬 Video Summary:

- The basic PLC hardware components include the following: power supply, central processing unit (or CPU), input and output modules, function modules, and communication modules. Having PLC hardware components together is crucial to make the PLC operates effectively.

- Typically, the first module is a power supply. The most common input voltage to a power supply is 120 or 230-volt AC. From this point, the power supply regulates and converts the AC input voltage to the DC output voltage, mostly 24-volt DC.

- The second module that we are talking about is the Central Processing Unit or CPU. The CPU controls and monitors all PLC system operations especially executing the PLC program based on the status of input field devices so, it can decide what output field devices should do.

- The next component of PLC hardware that we discuss is I/O or input/output modules that connect to different types of field devices. Digital input and output modules connect to the field devices that only have two statuses. These devices are either completely off or completely on. Analog input and output modules can measure or produce a variable signal that lies between a specific range of values.

- Function modules or FMs are another part of PLC hardware use in motion control applications with high accuracy. Whenever the input/output signals consist of high-frequency pulses, the function modules are needed to handle high-speed counting.

- The last, but by no means the least, is the communication modules. Communication modules supply extra communication ports or protocols that an industrial system may need. The communication modules provide additional ports on top of the ports we currently have on the CPU.

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⏰ TABLE OF CONTENTS ⏰
00:00 PLC Hardware Components
01:26 PLC Power Supply Module
02:32 PLC CPU Module
03:53 PLC Input/Output Modules
05:04 PLC Function Module
06:17 PLC Communication Module

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