The Linear power supply is less complicated than the other modes of power supply. It converts the high voltage into low voltage or DC, such as 120V AC to 24V DC. The power supply acts as a power source for the PLC system. The components of the PLC are listed below: PS Let's have a look at the architecture of the PLC.
PLC LADDER LOGIC PROGRAM GENERATION SOFTWARE
The PLC hardware setup or architecture contains the hardware and software that is used to perform the control functions. The output signal controls the output devices, such as motor, controllers, pilot lights, etc. The barrier present at the output terminal prevents the PLC from external noise and converts the low voltage to high voltage to drive output devices. Based on the specified logic, CPU processes and produces the output signal. The input signal passes through the barrier that converts the voltage into low voltage, such as 5V. The devices such as pushbutton, sensors are connected as the input devices, which can detect a change in the input signals in the PLC. PLC is lightweight and can operate without any electrical filtering or air conditioning. In simple words, PLC takes the input from the input devices, processes it based on the logic in the CPU, and controls the output devices based on that logic. But, the compact PLCs are used for small scale applications. The Input / Output (I/O) modules in the compact PLC are determined by the manufacturer of that PLC. The slots in the rack PLC communicate with each other connected by the standard network or bus. The racks are placed inside the cabinets. The modules in the rack type PLC are arranged in the rows. Let's have a look at the Modular type PLC. The example includes control processing lines in the manufacturing industry. It also has more memory and capability to store information. We can add more input and outputs by adding the modules in the PLC. It is useful when there are a large number of inputs and outputs. It allows us to expand the structure of PLC. In modular PLC, modular means adding modules. There are three types of PLC, which are shown below: Modular PLC The specific logic is different for each programmer with different techniques of doing the same thing. The selection of communication medium depends on the manufacturer. These applications communicate with the PLC using the communication medium, such as Ethernet or the proprietary communication bus. Most PLCs are controlled using the applications on the desktop/laptop. It includes calculation in the programming, which is used to calculate different parameters, such as SPC ( Statistical Process Control).īut for its operation, we need to program the Programmable Logic Controller. Hence, PLC is not limited to one building. The I/O modules may be present near or farther away from the CPU. The CPU (Control Processing Unit) communicates with the Input/output. The essential components of PLC are Input/output (I/O) modules, co-processor modules, CPU, and peripheral devices. Hence, to overcome such drawbacks, PLC was created.Ī PLC model has a simple appearance.
The machine operation using relays logic was quite challenging and time-consuming.The drawbacks of relays that make them unsuitable for the automotive industry are listed below: PLC was initially created in the United States for the replacement of relay systems. PLC ranges from small devices with few Input/Outputs to large devices with thousand of Input/Outputs. The applications include Robotics, water filling tanks, etc. It monitors the state of input devices, takes decisions, and controls the output devices. It provides easy, flexible, high-reliability programmable controllers suitable for simple and harsh environments. It involves a basic study of Microcontrollers, digital circuits, and designing skills. PLC is a digital computer control system adapted to control the robotic devices and other manufacturing processes. In this tutorial, we will cover the following topic: Here, we will discuss Automation, applications, types, programming, process, architecture, etc. Most organizations require a candidate having knowledge of PLC. PLC is one of the demanding skills of the Electrical industry. It is a special-purpose computer without a keyboard, hard drive, etc. PLC or Programmable Logic Controller is a computer control system for the Automation Industry.
0 kommentar(er)
