كتاب Programmable Logic Controllers Basic Level

كتاب Programmable Logic Controllers Basic Level

Table of Contents
Chapter 1 Automating with a PLC B-1
1.1 Introduction B-1
1.2 Areas of application of a PLC B-2
1.3 Basic design of a PLC B-5
1.4 The new PLC standard EN 61131 (IEC 61131) B-8
Chapter 2 Fundamentals B-11
2.1 The decimal number system B-11
2.2 The binary number system B-11
2.3 The BCD code B-13
2.4 The hexadecimal number system B-13
2.5 Signed binary numbers B-14
2.6 Real numbers B-14
2.7 Generation of binary and digital signals B-15
Chapter 3 Boolean operations B-19
3.1 Basic logic functions B-19
3.2 Further logic operations B-23
3.3 Establishing switching functions B-25
3.4 Simplification of logic functions B-28
3.5 Karnaugh-Veitch diagram B-30
Chapter 4 Design and mode of operation of a PLC B-33
4.1 Structure of a PLC B-33
4.2 Central control unit of a PLC B-35
4.3 Function mode of a PLC B-37
4.4 Application program memory B-39
4.5 Input module B-41
4.6 Output module B-43
4.7 Programming device/Personal computer B-45
Chapter 5 Programming of a PLC B-47
5.1 Systematic solution finding B-47
5.2 EN 61131-3 (IEC 61131-3) structuring resources B-50
5.3 Programming languages B-54
Chapter 6 Common elements of programming languages B-57
6.1 Resources of a PLC B-57
6.2 Variables and data types B-60
6.3 Program B-70
Chapter 7 Function block diagram B-85
7.1 Elements of function block diagram B-85
7.2 Evaluation of networks B-85
7.3 Loop structures B-87
Chapter 8 Ladder diagram B-89
8.1 Elements of ladder diagram B-89
8.2 Functions and function blocks B-92
8.3 Evaluation of current rungs B-93
Chapter 9 Instruction list B-95
9.1 Instructions B-95
9.2 Operators B-96
9.3 Functions and function blocks B-97
Chapter 10 Structured text B-99
10.1 Expressions B-99
10.2 Statements B-101
10.3 Selection statements B-103
10.4 Iteration statements B-106
Chapter 11 Sequential function chart B-111
11.1 Introduction B-111
11.2 Elements of sequential function chart B-111
11.3 Transitions B-120
11.4 Steps B-123
11.5 Example B-135
Chapter 12 Logic control systems B-139
12.1 What is a logic control system B-139
12.2 Logic control systems without latching properties B-139
12.3 Logic control systems with memory function B-145
12.4 Edge evaluation B-148
Chapter 13 Timers B-153
13.1 Introduction B-153
13.2 Pulse timer B-154
13.3 Switch-on signal delay B-156
13.4 Switch-off signal delay B-158
Chapter 14 Counter B-161
14.1 Counter functions B-161
14.2 Incremental counter B-161
14.3 Decremental counter B-165
14.4 Incremental/decremental counter B-167
Chapter 15 Sequence control systems B-169
15.1 What is a sequence control system B-169
15.2 Function chart to IEC 60848 B-169
Chapter 16 Commissioning and
operational safety of a PLC B-175
16.1 Commissioning B-175
16.2 Operational safety of a PLC B-177
Chapter 17 Communication B-183
17.1 The need for communication B-183
17.2 Data transmission B-183
17.3 Interfaces B-184
17.4 Communication in the field area B-185
Appendix
A Bibliography of illustrations B-187
B Bibliography of literature B-189
C Guidelines and standards B-191
D Glossary B-193


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