The working principle of a PLC is receiving input signals controlled process and perform a series o

Programmable Logic Controllers (PLC) is an electronic computer that is easy to use (user friendly) which has a control function for various types and levels of difficulty that diverse.
electronic system that operates digital and designed for use in industrial environments, where the system uses a programmable memory for the internal storage of instructions to implement specific functions such as logic, sequence, perwaktuan, counting and arithmetic operations to control the engine or process modules via the I / O digital and analog.
demonstrated ability in arithmetic processes the input and logic (ALU), which perform operations compare, add, multiply, divide, subtract, negation, AND, OR, and so forth.
PLC is designed to replace a sequential relay circuits in a control system. In addition to programmable, this tool also can be controlled, and operated car food warmer by people who do not have knowledge in computer operation in particular. The PLC has a programming language that is easily understood and can be operated when the program car food warmer was created using the software in accordance with the type of PLC being used is included.
This tool works based on existing inputs and depend on circumstances at a particular time and then going to ON or OFF right-clicking outputs. 1 shows that the state is expected to be met while 0 means the expected state is not fulfilled. PLC can also be applied to the control system which has a lot of output.
PLC processes the input signal into a binary output is used for the purposes of processing techniques in order (sequential), here PLC keep all the step or steps in a sequential process takes place in the proper car food warmer sequence.
PLC continuously monitors the status of a system (eg, temperature, pressure, altitude level) and take the necessary action with respect to the controlled car food warmer process (eg the value already exceeds the limit) or displays the message on the operator.
Meanwhile, PLC function in particular is able to provide input to the CNC (Computerized Numerical Control). Some PLC can provide input to the CNC for the benefit of further processing. CNC when compared with the PLC has a higher accuracy and is more expensive. CNC is usually used for the finishing process, the workpiece forming, molding and so on.
The working principle of a PLC is receiving input signals controlled process and perform a series of logic instructions on the input signal in accordance with a program car food warmer stored in the memory and generates car food warmer output signals to control actuators or other equipment.
There are five types of programming car food warmer language which can be used to program the PLC, although not all of them are supported by a PLC, among other things: 1. Programming language Ladder Diagram (LD) 2. Programming languages car food warmer Instruction List (IL) / Statement List (SL) 3. Sequential Function Chart programming language (SFC) / Grafcet 4. language Function Block Diagram programming (FBD) 5. higher level programming language (high-level), car food warmer for example Visual Basic
The author will discuss the PLC programming languages used most popular and most easily understood, the Ladder Diagram, using the example of an interlock. Ladder diagram is easy to understand because it uses a graphical approach, which uses electromagnetic component car food warmer symbols-mechanical relay (coil and contact), car food warmer function car food warmer blocks (function block), such as timers, counters, triggers, conditional, and block the function defined by programmers. In addition, because of Ladder car food warmer Diagram uses a graphical approach, the programmer becomes easier to perform troubleshooting on the program that will run on the PLC.
The development of the adult industry, particularly the industry in our country, go very rapidly along with the widespread kinds of industrial products, car food warmer ranging from what is classed as the upstream industry to downstream industry. The complexity of processing raw materials into raw materials, which proceeds either physical or chemical, have spurred people to constantly upgrade car food warmer and improve the performance of systems that support the process, to be more productive and efficient. One major concern in this regard is the use of industrial process control systems (industrial control systems). In the modern industrial age, industrial process control systems usually refers to the automation control systems are used. Industrial control systems where the human being is still very dominant car food warmer role (eg in response magnitudes measured by the process control system with a series of steps such as setting panel and the sa