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Industrial Automation PLC: functions (Messen, Steuern, Regeln = MSR) • • • • Measure Command Regulation Protection •Event Logging •Communication •Human interface 4/100 2.3 Programmable Logic Controllers
Industrial Automation PLC: Characteristics • large number of peripherals: 20..100 I/O per CPU, high density of wiring, easy assembly. • binary and analog Input/Output with standard levels • located near the plant (field level), require robust construction, protection against dirt, water and mechanical threats, electro-magnetic noise, vibration, extreme temperature range (-30C..85C) • programming: either very primitive with hand-help terminals on the target machine itself, or with a lap-top able to down-load programs. • network connection is becoming common, allowing programming on workstations. • field bus connection for remote I/Os • primitive Man-Machine interface, either through LCD-display or connection of a laptop over serial lines (RS232). • economical - €1000.- .. €15'000.- for a full crate. • the value is in the application software (licenses €20'000 ..€50'000) 5/100 2.3 Programmable Logic Controllers
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2005 March, HK courtesy ABB 2. Inst
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Industrial Automation The instrumen
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2.1 Instrumentation 2.1.1 Market 2.
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Industrial Automation Binary Signal
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Industrial Automation Precision: re
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Industrial Automation Variable diff
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Industrial Automation Small positio
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Industrial Automation Force measure
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courtesy Parker Motion & Control In
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Industrial Automation 2.1.3.2 Tempe
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Thermo-element (Thermocouple) two d
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•pulsed laser •load cell •pul
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Other means: Magnetic-dynamic Corio
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Industrial Automation Drives (varia
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Pumps, valves, rods,… Industrial
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Industrial Automation Transducer A
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Object measurand Transducer Industr
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Piping and Instrumentation Diagram
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Industrial Automation Instrumentati
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Square root extraction of the input
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Connection to process, or instrumen
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Industrial Automation Parallel exec
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esource task task program program I
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Connecting to Input/Output, Method
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Industrial Automation 2.3.5.5 Struc
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Industrial Automation Data Types Si
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Industrial Automation Example of De
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Industrial Automation SFC (Sequenti
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Industrial Automation SFC: Initial
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Industrial Automation SFC: P1, N an
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Variables: Input: In0, In1, In2, In
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Industrial Automation SFC: Structur
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Function Blocks: Continuous (time)
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Industrial Automation Flow Charts O
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Industrial Automation 2.3.5.7 Ladde
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origin: electrical circuit correspo
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Series Parallel Industrial Automati
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Industrial Automation Ladder logic
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Industrial Automation 2.3.6 Instruc
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Industrial Automation Instruction L
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Industrial Automation Programming e
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Industrial Automation Program maint
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Industrial Automation IEC 61131-3 e
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Industrial Automation Limitations o
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