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Function Module in Siemens PLC is used in motion control applications where speed and accuracy are a must for field devices.
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What is a PLC?A PLC, or Programmable Logic Controller, is a computer built to function reliably under the tough conditions of industrial environments like extreme temperatures or dusty areas. It automates processes in industries, including manufacturing and wastewater treatment. PLCs share many features of the personal computer you have at home. Th...
PLCs, created by Dick Morley in 1964, have transformed the industrial and manufacturing sectors with functions such as timing, counting, and signal processing. The main advantage of a PLC over a “hard-wired” control system is that you can go back and change a PLC after you’ve programmed it, at little cost (just the cost of the programmer’s time). I...
The working of a programmable logic controller can be easily understood as a cyclic scanning method known as the scan cycle. A PLC Scan Process includes the following steps 1. The operating system starts cycling and monitoring time. 2. The CPU starts reading the data from the input module and checks the status of all the inputs. 3. The CPU starts e...
The structure of a PLC is almost similar to a computer’s architecture. Programmable Logic Controllers continuously monitor the input values from various input sensing devices (e.g. accelerometer, weight scale, hardwired signals, etc.) and produce corresponding output depending on the nature of production and industry. A typical block diagram of PLC...
PLCs have a variety of applications and uses, including: 1. Process Automation Plants (e.g. mining, oil &gas) 2. Glass Industry 3. Paper Industry 4. Cement Manufacturing 5. In boilers – Thermal Power Plants
When using a PLC, it’s important to design and implement concepts based on your particular use case. To do this, we first need to learn more about the specifics of PLC programming. A PLC program consists of a set of instructions either in textual or graphical form, which represents the logic that governs the process the PLC is controlling. There ar...
A signal lamp is required to be switched on if a pump is running and the pressure is satisfactory, or if the lamp test switch is closed. In this application, if there should be an output from the lamp inputs from both the pump and pressure sensors are required. Hence, AND logic gatesare used. OR logicis used for the test input condition, it is requ...
Initially, early PLCs couldn’t graphically represent logic, so they used Booleanalgebra to depict logical expressions. As programming terminals evolved, ladder logic became more common because it was a familiar format used for electromechanical control panels. More modern formats, such as state logic and Function Block diagrams, exist, but they are...
In a PLC (Programmable Logic Controller), a function module is a module or plug-in specifically designed to perform a specific control function. Each functional module has specific input and output interfaces, as well as a set of built-in control algorithms to achieve a specific task or function.
- Rack or Chassis. The rack or chassis is the most important part of the modular or rack-mounted PLC system. PLC rack or chassis is a hardware assembly that plugs every communicating modules together (like input, output, CPU, power supply, communication, and additional function modules) in a single frame.
- Power Supply (PS) Module. Power supply modules provide the required level of regulating power supply to connected modules in the rack. This module is responsible for providing AC or DC power sources to operate the PLC through the backplane bus.
- Central Processing Unit. Central Processing Unit (CPU) acts as the brain of PLC system. Basically, CPU performs arithmetic, logic, controlling operations specified by the programming instructions.
- Interface Module (IM) The interface module is optional or an additional module. It is used for the rack to rack communication in multi-tier configuration in modular PLC system.
Mar 7, 2024 · The basic function of the input module is to establish the presence or absence of a signal. The inputs from peripheral devices to the input modules can be ac or dc signals. The voltage ratings for input modules can vary from 24 V or 240 V, ac or dc, as well as 5 V and 12 V TTL levels.
Feb 27, 2024 · PLC is a general-purpose computer modified specially to perform control tasks. It is used for industrial automation to automate a specific process, machine function, or even entire production. PLCs are developed for electronic replacement for hard-wired relay logic circuit systems for machine control.
People also ask
What is a function module in a PLC?
How many types of PLC modules are there?
What are the components of a PLC system?
What is function module in Siemens plc?
What are the different types of PLC modules used in rugged computers?
What are the input and output modules of a PLC?
Apr 13, 2023 · Let’s look at the types of PLC modules used in rugged computers that operate under harsh conditions. There are seven PLC module types: Rack or Chassis. Power supply (PS) Module. Central processing unit. Interface Module(IM). Signal Module (SM). Function Modules (FM). Communication Processor (CP).
