Introductory PLC Programming Contents [hide] 1 Introduction 1.1 What is a PLC (Programmable Logic Controller)? 1.2 The PLCs purpose in life 1.3 History of PLCs 1.4 Recent developments 2 Basic Concepts 2.1 How the PLC operates 2.1.1 Scan cycle 3 Basic instructions 4 Wikibooks Links 5 External links [edit]Introduction [edit]What is a PLC (Programmable Logic Controller)? A Programmable Logic Controller‚ or PLC‚ is more or less a tiny computer with a built-in operating system (OS). This OS is
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Design of fuzzy controller for two tank interacting system Mohamed sabith KT Second year M.tech Dept of Electrical Engineering NIT Calicut Calicut‚ India sabithkt@gmail.com Dr. Abraham T Mathew Professor‚ Dept of Electrical Engineering NIT Calicut Calicut‚ India atm@nitc.ac.in Abstract—The control of liquid level in tanks and flow between tanks is a basic problem in the process Industries. Vital industries such as Petro-chemical industries‚ Paper making industries‚ Water treatment industries
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Fig.2. Block diagram of Continuous PID Controller What the PID controller does is basically is to act on the variable to be manipulated through a proper combination of the three control actions that is the P control action‚ I control action and D control action. The P action is the control action that is proportional to the actuating error signal‚ which is the difference between the input and the feedback signal. The I action is the control action which is proportional to the integral of the actuating
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AUTOMATIC CONTROL OF HYDRAULIC SYSTEM USING PLC * Company Products & Services * Abstract * Hydraulic System * Bow Compression Machine * Circuit Diagram * Description * Chiller Unit * Solenoid valve * Introduction To PLC * Software * Advantages Of PLC * Introduction To PLC * Existing System * Proposed System * Ladder Logic Diagram * Ladder Logic Description * Energy Saving Calculation * For Existing Method * For Proposed
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the microcontroller. Now the program is prepared for the microcontroller to energize or de-energize the corresponding relay based on the code produced by the DTMF decoder chip. SOFTWARE: 1) Keil C 2) 2) ORCAD/Express PCB HARDWARE: 1) Micro controller. 2) DTMF 3) LCD module. 4) Power supply.
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2387‚ Page 1 Control of an Electronic Expansion Valve Using an Adaptive PID Controller Antônio A. T. Maia*‚ Marconi A. Silva‚ Ricardo N. N. Koury‚ Luiz Machado‚ Alexandre C. Eduardo Federal University of Minas Gerais‚ Mechanical Engineering Department‚ Belo Horizonte‚ Minas Gerais‚ Brazil Phone: + (55 31) 3409 6667‚ Fax: + (55 31) 3443 3783‚ e-mail: aamaia@ufmg.br ABSTRACT In many refrigeration systems‚ electronic expansion devices have been used to replace the conventional expansion devices
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typically handles the accounting activities such as corporate accounting‚ tax management‚ financial accounting and cost accounting. The duties of a financial controller vary depending on the size of the entity‚ number of accountants in the company and the difficulty of the accounting and financial operations. Their basic role of a financial controller is to be accountable for the accounting operations of the company. In this light they have to develop and maintain timely and accurate financial statements
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Shams University - Major Accounting - May 1999-Average Grade (GOOD). - General Certificate of Secondary Education (Thanawia Amma) from Yehia Al Rafaei Language School‚ 1995. Experience (Current Occupation: Financial Controller Responsibilities: 1. Monthly Closing & Management reporting • Full responsibility for the Monthly closing (production reports ‚ Inventory and financial results) • Full responsibility for the monthly management
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#!/usr/bin/env python # -*- coding:utf-8 -*- import wx import subprocess from os import system class BrightnessController(wx.Frame): def debug_true(self): return False def detect_display_devices(self): """Detects available displays""" connected_devs = [] xrandr_output = subprocess.check_output(’xrandr -q’‚ shell=True) lines = xrandr_output.split(’\n’) for line in lines: words = line.split(’ ’)
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Case Study 1: Nucor Corporationand New jersey Insurance co: Notes Case Study 2: Xerox Corporation: Xerox Corporation Question No.1 Outline the management control system at XEROX. What Are the elements that makes the system work ? Management Control System at XEROX Conditions prior to 1970. * Rigid System * Emphasis on Accuracy * Setting Unrealistic targets * Inadequate data analysis * Reporting & planning process was very long and bureaucratic
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