Study and implementation of programmable logic controller

This project work is divided into two parts. The first part deals with the history and development of Programmable Logic Controllers and its subsequent applications in different industries. In The second part PLC was implemented to control 3 different processes namely lift car controller, Liquid level controller, Temperature controller. Automation of many different processes, such as controlling machines or factory assembly lines, is done through the use of small computers called a programmable logic controller (PLC). This is actually a control device that consists of a programmable microprocessor, and is programmed using a specialized computer language. Before, a programmable logic controller would have been programmed in ladder logic, which is similar to a schematic of relay logic. A modern programmable logic controller is usually programmed in any one of several languages, ranging from ladder logic to Basic or C. Typically, the program is written in a development environment on a personal computer (PC), and then is downloaded onto the programmable logic controller directly through a cable connection. The program is stored in the programmable logic controller in on-volatile memory.The programmable logic controller has made a significant contribution to factory automation. Earlier automation systems had to use thousands of individual relays and cam timers, but all of the relays and timers within a factory system can often be replaced with a single programmable logic controller. Today, programmable logic controllers deliver a wide range of functionality, including basic relay control, motion control, process control, and complex networking, as well as being used in Distributed Control Systems. There are several different types of interfaces that are used when people need to interact with the programmable logic controller to configure it or work with it. This may take the form of simple lights or switches or text displays, or for more complex systems, a computer of Web interface on a computer running a Supervisory Control and Data Acquisition (SCADA) system. Programmable logic controllers were first created to serve the automobile industry, and the first programmable logic controller project was developed in 1968 for General Motors to replace hard-wired relay systems with an electronic controller.The lift controller controls the movement of the lift. The program is designed to make the lift car move to the correct floor based on floor request. The temperature controller controls the temperature of the fluid based on a set point. The level controller controls the level of a liquid in a tank

Tissue Processor Based PLC (Programmable Logic Controller)

Tissue Processor Tissue Processor consists of consists of several stages of dehydration, clearing, and paraffin infiltration.Phase dehydration to remove water content in tissues by immersion into alcohol. Clearing stage is the process of pulling out the alcohol content in the network by using a liquid xylol. Paraffin infiltration stages is the stage of filling cavities with liquid paraffin tissue. The purpose of this research is to modify the equipment that had broken before became an useful equipment that use basic controlled  PLC. This modification tool-making using the "one-group posttest design" by treatment of the instrument without first measuring the initial state, the results of treatment directly measured without comparison to a control group. Making the modification tool using PLC as the main controller throughout the series. The tool mechanical motion using DC motors and AC motors as well as the use of two sensors limit switch as the controller limits the motor movement. Based on the results obtained temperature measurement error with the largest value of 4.44% in paraffin heater tube 1 and the biggest error of 4.0% in paraffin heater tube 2. While the measurement time of each - each tube obtained the smallest error on the tube-to-one by 0 , 03%, and the biggest error of measurement contained in the tube to the fourth, fifth, sixth, eighth and tenth of 0.16%

Sistem Koreksi Otomatis Pada Mesin Packaging Dengan Pengendali Plc

Salah satu kecacatan produk dalam kemasan pouch apabila produk tersebut ditemukan overlap. Overlap pada produk sabun refill (isi ulang) merupakan salah satu kecacatan produk yang dapat menyebabkan minat konsumen menurun. Sistem Autocorrection (Pengoreksi-Otomatis) merupakan sistem kendali berbasis PLC (Programmable Logic Controller) yang dirancang untuk mengatasi overlap pada produk pouch. Sensor photo electric amplifier ditanamkan pada sistem ini yang berfungsi sebagai trigger input ke PLC (Programmable Logic Controller) sekaligus pendeteksi overlap yang kemudian sinyal input dari sensor tersebut diolah oleh PLC (Programmable Logic Controller). Output yang dihasilkan berupa gerakan pada sidelay motor (actuator dengan motor AC sebagai penggeraknya) untuk bergeser ke arah kiri atau ke arah kanan tergantung salah satu sensor aktif terlebih dahulu

Sistem Koreksi Otomatis pada Mesin Packaging dengan Pengendali Plc

Salah satu kecacatan produk dalam kemasan pouch apabila produk tersebut ditemukan overlap. Overlap pada produk sabun refill (isi ulang) merupakan salah satu kecacatan produk yang dapat menyebabkan minat konsumen menurun. Sistem Autocorrection (Pengoreksi-Otomatis) merupakan sistem kendali berbasis PLC (Programmable Logic Controller) yang dirancang untuk mengatasi overlap pada produk pouch. Sensor photo electric amplifier ditanamkan pada sistem ini yang berfungsi sebagai trigger input ke PLC (Programmable Logic Controller) sekaligus pendeteksi overlap yang kemudian sinyal input dari sensor tersebut diolah oleh PLC (Programmable Logic Controller). Output yang dihasilkan berupa gerakan pada sidelay motor (actuator dengan motor AC sebagai penggeraknya) untuk bergeser ke arah kiri atau ke arah kanan tergantung salah satu sensor aktif terlebih dahulu

Programmable Logic Devices in Experimental Quantum Optics

We discuss the unique capabilities of programmable logic devices (PLD's) for experimental quantum optics and describe basic procedures of design and implementation. Examples of advanced applications include optical metrology and feedback control of quantum dynamical systems. As a tutorial illustration of the PLD implementation process, a field programmable gate array (FPGA) controller is used to stabilize the output of a Fabry-Perot cavity

Aplikasi Programmable Logic Controller (Plc) Omron Cp1e Na20 Dra Dalam Proses Pengaturan Sistem Kerja Mesin Pembuat Pelet Ikan

Tiar Kusuma Dewi, Priyo Sasmoko, in paper application of programmable logic controller (PLC) omron CP1E NA20 DRA in control system of fish pellets builders engine explain that better known as PLC or Programmable Logic Controller is an electronic apparatus that works digitally , has a programmable memory , save the commands to perform specific functions such as logic , timing , counting and arithmatik to control different types of machines or processes through modules input / output analog or digital . PLC will run the display module according to the mnemonic code is entered into the PLC via the Programming Console or the CX - Programmer programs . However , here are discussed PLC using the CX - Programmer . OMRON PLC used is CP1E NA20 DRA . PLC works by observing input ( via sensors related ) , then the process and take action as needed , ie turn on or turn off the output ( logic 0 or 1 ) . Users create a program that will then be executed by the PLC in question , so that the tool Fish Pellet Machine Manufacturers Automatic will work as desired

PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS WEBSITE PADA MATA PELAJARAN PROGRAMMABLE LOGIC CONTROLLER

Penelitian ini bertujuan untuk: (1) Mengembangkan media pembelajaran berbasis website pada mata pelajaran programmable logic controller. (2) Mengetahui tingkat kelayakan media pembelajaran berbasis website pada mata pelajaran programmable logic controller. (3) Mengetahui efektivitas media pembelajaran berbasis website yang dikembangkan untuk pembelajaran programmable logic controller. Metode penelitian yang digunakan ini adalah penelitian pengembangan (Research and Development) yang menggunakan model pengembangan Alessi Trollip. Tahapan-tahapan pengembangan media ini meliputi : tahap perencanaan, desain, dan pengembangan. Tahap pengujian yang dilakukan terhadap kelayakan produk sebagai media pembelajaran meliputi uji alpha dan uji beta. Uji coba alpha dilakukan oleh ahli materi dan ahli media, uji coba beta dilakukan oleh 25 siswa SMK Muhammadiyah 3 Yogyakarta. Teknik pengumpulan data dalam peneltian ini menggunakan wawancara, kuesioner, dan lembar observasi. Metode yang digunakan untuk menganalisis data adalah dengan teknik analisis deskriptif kuantitatif yang diungkapkan dalam distribusi skor skala lima (skala likert). Produk akhir dari pengembangan media pembelajaran ini dilanjutkan dengan uji efektifitas produk. Metode yang digunakan dalam penelitian ini adalah metode pre-eksperimental design yaitu One-Group Pretest – Posttest Design Berdasarkan hasil penelitian menunjukkan bahwa: (1) pengembangan media pembelajaran pada mata pelajaran programmable logic controller ini dilakukan melalui beberapa tahap yaitu tahap perencanaan, desain dan produksi / pengembangan (2) Tingkat validitas media pembelajaran programmable logic controller yang diberikan oleh ahli materi dengan maksimal skor 5 mendapatkan skor rata-rata 4,13 dengan kategori ”baik”, hasil penilaian ahli media dengan skor rata-rata 4,11 dengan kategori ”baik” dan hasil penilaian siswa diperoleh skor rata-rata 4,08 dengan kategori ”baik”. (3) Sedangkan dalam pre-test dan post-test dengan nilai rata-rata pre-test 59,84 dan post-test 73,44.. Hasil uji-t menyatakan nilai thitung > ttabel (8,955 > 2,064) dan signifikansi (0,000 < 0,05), artinya terdapat perbedaan yang signifikan rata-rata skor nilai prestasi belajar siswa pre-test dengan post-test

Exploring Code Clones in Programmable Logic Controller Software

The reuse of code fragments by copying and pasting is widely practiced in software development and results in code clones. Cloning is considered an anti-pattern as it negatively affects program correctness and increases maintenance efforts. Programmable Logic Controller (PLC) software is no exception in the code clone discussion as reuse in development and maintenance is frequently achieved through copy, paste, and modification. Even though the presence of code clones may not necessary be a problem per se, it is important to detect, track and manage clones as the software system evolves. Unfortunately, tool support for clone detection and management is not commonly available for PLC software systems or limited to generic tools with a reduced set of features. In this paper, we investigate code clones in a real-world PLC software system based on IEC 61131-3 Structured Text and C/C++. We extended a widely used tool for clone detection with normalization support. Furthermore, we evaluated the different types and natures of code clones in the studied system and their relevance for refactoring. Results shed light on the applicability and usefulness of clone detection in the context of industrial automation systems and it demonstrates the benefit of adapting detection and management tools for IEC 611313-3 languages.Comment: 8 pages, 2 figures, 2 tables, COMET Center SCCH (FFG #844597), etfa201

Analisis sistem kontrol special milling machine berbasis PLC

Programmable Controller atau lebih dikenal sebagai Programmable Logic Controller (PLC) merupakan instrumen yang sangat bermanfaat untuk membantu sistem kontrol di industri karena PLC mempunyai kemampuan melaksanakan sebagian besar sistem kontrol yang diperlukan di industri

Process Mining of Programmable Logic Controllers: Input/Output Event Logs

This paper presents an approach to model an unknown Ladder Logic based Programmable Logic Controller (PLC) program consisting of Boolean logic and counters using Process Mining techniques. First, we tap the inputs and outputs of a PLC to create a data flow log. Second, we propose a method to translate the obtained data flow log to an event log suitable for Process Mining. In a third step, we propose a hybrid Petri net (PN) and neural network approach to approximate the logic of the actual underlying PLC program. We demonstrate the applicability of our proposed approach on a case study with three simulated scenarios