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Industrial Automation SCF: Complex structures These general rules serve to build networks, termed by DIN and IEC as flow charts Problems with general networks: deadlocks uncontrolled token multiplication Solution: assistance through the flow chart editor. 76/100 2.3 Programmable Logic Controllers
Function Blocks: Continuous (time) control Industrial Automation Function blocks And Flow Chart Sequential Flow Charts: Discrete (time) Control Many PLC applications mix continuous and discrete control. A PLC may execute alternatively function blocks and flow charts. A communication between these program parts must be possible. Principle: The flow chart taken as a whole can be considered a function block with binary inputs (transitions) and binary outputs (states). 77/100 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 German IP-Pro
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Industrial Automation European Expl
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Industrial Automation Assessment Ho
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2005 March, HK set point Control of
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140 120 2 1 180 3 5 200 4 Why do we
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Industrial Automation Controllers T
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Industrial Automation Modeling: Con
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set-point (solicited) Sollwert vale
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Steam ∆P ∆f Main steam valve Ac
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Industrial Automation Two-point con
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value % 1.20 1.00 0.80 0.60 0.40 0.
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Industrial Automation A glance back
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The Watts "governor" (1791) - the f
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Industrial Automation Plant model f
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m(t), y 0 (t) 2 1.5 1 0.5 0 -0.5 co
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u 0 (t), y 0 (t) 2 1.8 1.6 1.4 1.2
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controller gain set-point u 0 error
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PID-Controller (Proportional-Integr
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time domain Laplace domain Industri
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1 0 P (K p = 15) less error, but un
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2.1 Instrumentation 2.2 Control 2.2
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Industrial Automation Nested loops
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Industrial Automation To probe furt
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POST_START_TIMER_MOD N_GT FAULT_STA
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Industrial Automation Programmable
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Industrial Automation PLC: Characte
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Switzerland SAIA, Weidmüller Indus
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(1) (2) (3) Compact Monolithic cons
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courtesy ABB Industrial Automation
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€ compact PLC (fixed number of I/
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23 4 3 3 2 12 2 I/O modules Industr
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Industrial Automation Specific Cont
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Micro: 15 to 128 I/O points Medium:
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Industrial Automation 2.3.3 PLCs: F
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CPU fieldbus controller field bus R
Page 119 and 120: Industrial Automation Matching the
Page 121 and 122: Industrial Automation Continuous Pl
Page 123 and 124: "combinatorial" 1) e.g. ladder logi
Page 125 and 126: Extend procedural languages to expr
Page 127 and 128: Function Block Diagram (FBD) AUTO A
Page 129 and 130: Industrial Automation 2.4.2.1 Funct
Page 131 and 132: Example 1: Example 2: A B external
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Page 135 and 136: Types of Programming Organisation U
Page 137 and 138: inary elements AND OR XOR S1 SR R Q
Page 139 and 140: Basic blocks Industrial Automation
Page 141 and 142: AXIS_REF Function Block library for
Page 147 and 148: Segment or POU (program organizatio
Page 149 and 150: Industrial Automation Parallel exec
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Page 153 and 154: Connecting to Input/Output, Method
Page 155 and 156: Industrial Automation 2.3.5.5 Struc
Page 157 and 158: Industrial Automation Data Types Si
Page 159 and 160: Industrial Automation Example of De
Page 161 and 162: Industrial Automation SFC (Sequenti
Page 163 and 164: Industrial Automation SFC: Initial
Page 165 and 166: Industrial Automation SFC: P1, N an
Page 167 and 168: Variables: Input: In0, In1, In2, In
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Page 173 and 174: Industrial Automation Flow Charts O
Page 175 and 176: Industrial Automation 2.3.5.7 Ladde
Page 177 and 178: origin: electrical circuit correspo
Page 179 and 180: Series Parallel Industrial Automati
Page 181 and 182: Industrial Automation Ladder logic
Page 183 and 184: Industrial Automation 2.3.6 Instruc
Page 185 and 186: Industrial Automation Instruction L
Page 187 and 188: Industrial Automation Programming e
Page 189 and 190: Industrial Automation Program maint
Page 191 and 192: Industrial Automation IEC 61131-3 e
Page 193: Industrial Automation Limitations o
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