|
1
|
General
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9
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1.1
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Scope
|
9
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1.2
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References
|
10
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1.3
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Use of this report
|
10
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2
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Definitions
|
10
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|
2.1
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Application program (user program)
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10
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2.2
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Automated system
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11
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2.3
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PLC-system
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11
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2.4
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Programmable controller (PLC)
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11
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2.5
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Programmable controller system (PLC-system)
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11
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3
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Key elements of IEC 61131-1, Part 1: General information
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11
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3.1
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PLC hardware model
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11
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3.2
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Basic functional structure of a PLC system
|
12
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|
3.3
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CPU function
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13
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|
3.4
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Programming languages
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13
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3.4.1
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Textual languages
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13
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3.4.2
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Graphical languages
|
14
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3.4.3
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Sequential Function Chart (SFC)
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14
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3.5
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Availability and reliability
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14
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3.6
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Re-start of PLC operating system
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15
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3.7
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Documents supplied to the user
|
15
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4
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Key elements of IEC 61131-2: Part 2 - Equipment requirements and testing
|
15
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4.1
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Scope of Part 2
|
15
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4.2
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Definitions
|
16
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|
4.2.1
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Digital input types
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16
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4.2.2
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Earth, functional Earth, Protective Earth
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16
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4.2.3
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Equipment class
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16
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4.2.4
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Hazardous voltage
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16
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4.2.5
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Operator
|
16
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4.2.6
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Pollution degree
|
17
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4.2.7
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Protective Extra-Low Voltage (PELV) circuit
|
17
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4.2.8
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Safety Extra-Low voltage (SELV) circuit
|
17
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4.2.9
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Type of test
|
17
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4.3
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Functional requirements
|
17
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4.3.1
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Power supply ratings
|
17
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4.3.2
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Power supply harmonics
|
17
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4.3.3
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Power back up for memory
|
18
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|
4.3.4
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Digital I/Os
|
18
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|
4.3.5
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Special output modules
|
19
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4.3.6
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Analog I/Os
|
19
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|
4.3.7
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Communication Interfaces
|
19
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|
4.3.8
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Main Processing Unit(s) and Memory(ies)
|
19
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4.3.9
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Remote input/output stations (RIOSs)
|
20
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4.3.10
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Peripherals (PADTs, TEs, HMIs)
|
20
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4.3.11
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Self-Tests and Diagnostics
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20
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4.3.12
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Marking requirements
|
21
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|
4.3.13
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External wiring terminals identifications
|
21
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|
4.4
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Electromagnetic compatibility (EMC) requirements
|
21
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|
4.4.1
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Electromagnetic emission requirements
|
21
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|
4.4.2
|
Immunity zones
|
22
|
|
4.4.3
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EMC performance criteria
|
24
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4.5
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Safety requirements for PLC equipment
|
24
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|
4.5.1
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Protection against electric shock
|
24
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|
4.5.2
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Protection against spread of fire
|
25
|
|
4.5.3
|
Protection against hazardous temperature
|
25
|
|
4.6
|
Information to be provided by the manufacturer
|
26
|
|
4.6.1
|
Information on type and content of documentation
|
26
|
|
4.6.2
|
Information on compliance with this standard
|
26
|
|
4.6.3
|
Information on reliability
|
26
|
|
4.6.4
|
Information on EMC
|
26
|
|
4.6.5
|
Information on safety
|
26
|
|
4.6.6
|
Information on evaluation of enclosures for open equipment
|
27
|
|
4.6.7
|
Information on mechanical terminal connection
|
27
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|
4.6.8
|
Information on other conditions
|
27
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|
4.6.9
|
Information on AC and DC power supply
|
27
|
|
4.6.10
|
Information on digital inputs (current sinking)
|
27
|
|
4.6.11
|
Information on digital outputs for alternating currents (current sinking)
|
28
|
|
4.6.12
|
Information on digital outputs for direct current (current sourcing)
|
28
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|
4.6.13
|
Information on analog inputs
|
28
|
|
4.6.14
|
Information on analog outputs
|
28
|
|
4.6.15
|
Information on communication interface
|
29
|
|
4.6.16
|
Information on main processing unit(s) and memor(ies) of the PLC system
|
29
|
|
4.6.17
|
Information on remote input/output stations (RIOSs)
|
29
|
|
4.6.18
|
Information on peripherals (PADTs, TEs, HMIs)
|
30
|
|
4.6.19
|
Information on self tests and diagnostics
|
30
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|
4.7
|
Compliance with IEC 61131-2 standard
|
30
|
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5
|
Key elements of IEC61131-3: Part 3 - Programming Languages
|
31
|
|
5.1
|
Technical contents of Part 3
|
31
|
|
5.2
|
Common Elements
|
31
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|
5.2.1
|
Data typing
|
31
|
|
5.2.2
|
Variables
|
32
|
|
5.2.3
|
Configuration, resources and task
|
32
|
|
5.2.4
|
Programs
|
33
|
|
5.2.5
|
Functions
|
33
|
|
5.2.6
|
Function Blocks (FB)
|
33
|
|
5.2.7
|
Sequential Function Chart (SFC)
|
33
|
|
5.3
|
Programming languages
|
34
|
|
5.3.1
|
Instruction List (IL)
|
35
|
|
5.3.2
|
Structured Text (ST)
|
36
|
|
5.3.3
|
Ladder diagram (LD)
|
37
|
|
5.3.4
|
Function Block Diagram (FBD)
|
37
|
|
5.4
|
Applications program development
|
39
|
|
5.4.1
|
Top-down and bottom-up program development
|
39
|
|
5.4.2
|
Program layout and structure
|
40
|
|
5.4.3
|
Programming with Sequential function chart (SFC)
|
40
|
|
5.4.4
|
Derived Function Block (DFB)
|
41
|
|
5.5
|
Implementation
|
42
|
|
6
|
Key Elements of IEC61131-5, Part 5 - Communication
|
42
|
|
6.1
|
Scope of Part 5
|
42
|
|
6.2
|
Technical contents of IEC61131-5 and the PLC model
|
43
|
|
6.2.1
|
Technical contents of Part 5
|
43
|
|
6.2.2
|
PLC communication model
|
44
|
|
6.3
|
Communication Model
|
45
|
|
6.3.1
|
Client-server model
|
45
|
|
6.3.2
|
Communication relating to PLC hardware model
|
45
|
|
6.4
|
PLC communication services
|
46
|
|
6.4.1
|
PLC subsystems and their status
|
46
|
|
6.4.2
|
PLC summary status
|
47
|
|
6.4.4
|
Status of I/O subsystem and Processing Unit
|
49
|
|
6.5
|
Application functions
|
50
|
|
6.5.1
|
Device verification
|
51
|
|
6.5.2
|
Data acquisition
|
51
|
|
6.5.3
|
Parameter Control
|
51
|
|
6.5.4
|
Alarm reporting
|
51
|
|
6.5.5
|
Application program execution and I/O control
|
52
|
|
6.5.6
|
Application program transfer
|
53
|
|
6.5.7
|
Connection management
|
53
|
|
6.6
|
Communication function blocks
|
53
|
|
6.6.1
|
Communication function and block representation
|
53
|
|
6.6.2
|
Example for the use of Communication Function Blocks
|
54
|
|
6.7
|
Compliance
|
55
|
|
7.
|
Key elements of IEC61131-7, Part 7 - Fuzzy Logic programming
|
56
|
|
7.1
|
General outline of Part 7
|
56
|
|
7.2
|
Integration of fuzzy control application into the programmable controllers
|
56
|
|
7.3
|
Fuzzy Control Language (FCL)
|
57
|
|
7.3.1
|
Function Block interface
|
57
|
|
7.3.2
|
Fuzzification
|
57
|
|
7.3.3
|
Defuzzification
|
58
|
|
7.3.4
|
Rule block
|
59
|
|
7.4
|
Exchange of fuzzy control programs
|
60
|
|
7.5
|
Compliance
|
61
|
|
7.5.1
|
Compliance classes of Fuzzy Control Language (FCL)
|
61
|
|
7.5.2
|
Data check list
|
62
|
|
8
|
General rules for installation
|
63
|
|
8.1
|
Environmental conditions
|
63
|
|
8.2
|
Field wiring
|
64
|
|
8.3
|
Electromagnetic compatibility
|
65
|
|
8.4
|
User system markings
|
66
|
|
9
|
PLC in Functional safety applications
|
66
|
|
9.1
|
Using a PLC in a safety-related application
|
66
|
|
9.2
|
Safety-related system – Safety requirements
|
67
|
|
9.3
|
PLC requirements in a safety-related system
|
68
|
|
9.4
|
Integration of PLC into safety-related system
|
68
|
|
Annex A
|
User checklists
|
70
|
|
A.1
|
Equipment data
|
70
|
|
A.2
|
General information checklist
|
71
|
|
A.3
|
Equipment requirements checklist
|
71
|
|
A.4
|
Checklist on programming languages
|
73
|
|
A.5
|
Checklist on communication
|
73
|
|
A.6
|
Checklist on Fuzzy control language
|
74
|
|
A.7
|
Checklist on installation
|
74
|
|
A.8
|
Checklist on safety-related application
|
74
|
|
Annex B
|
Comparism of EN and IEC61131
|
75
|
|
C1
|
Advance Planning
|
76
|
|
C2
|
Variable Naming Conventions / Methodologies
|
77
|
|
C2.1
|
Naming Methodologies
|
77
|
|
C2.2
|
Use of Upper & Lower Case
|
77
|
|
C2.3
|
Consistent Project Prefixes, Suffixes and Acronyms
|
77
|
|
C2.4
|
Sequential Function Chart (SFC) step naming
|
77
|
|
C3
|
Structure / Organization
|
78
|
|
C3.1
|
Program Structure by area / process flow
|
78
|
|
C3.2
|
Structured Variables (Data Types) for multiple devices
|
78
|
|
C3.3
|
Data Arrays for data storage & Manipulation
|
79
|
|
C4
|
Use of the Appropriate Language
|
79
|
|
C5
|
DFB requirements
|
79
|
|
C5.1
|
Device Control
|
79
|
|
C5.2
|
Frequently used Functions
|
79
|
|
C5.3
|
Special Functions
|
79
|
|
Annex C
|
Example of PLC software implementation
|
79
|
|
Annex D
|
Example of PLC communications implementation
|
80
|
|
Annex E
|
Example of PLC fuzzy control language implementation
|
81
|
|
Annex F
|
Example of a PLC system in safety-related application
|
82
|
|
Annex G
|
Reference standards
|
83
|
