Siemens 6AV6651-7KA01-3AA4 - S7-1200 + KTP400 Basic Starter Kit 6AV6651-7KA01-3AA4 사용자 설명서
제품 코드
6AV6651-7KA01-3AA4
Table of contents
Easy Book
8
Manual, 03/2014, A5E02486774-AF
3.10
Create an HMI screen ................................................................................................................. 49
3.11
Select a PLC tag for the HMI element ........................................................................................ 50
4
PLC concepts made easy ..................................................................................................................... 51
4.1
4.1
Tasks performed every scan cycle ............................................................................................. 51
4.2
Operating modes of the CPU ...................................................................................................... 52
4.3
Execution of the user program .................................................................................................... 53
4.3.1
Processing the scan cycle in RUN mode .................................................................................... 54
4.3.2
OBs help you structure your user program ................................................................................. 55
4.3.3
Event execution priorities and queuing ....................................................................................... 55
4.4
Memory areas, addressing and data types ................................................................................. 58
4.4.1
Data types supported by the S7-1200 ........................................................................................ 60
4.4.2
Addressing memory areas .......................................................................................................... 62
4.4.3
Accessing a "slice" of a tagged data type ................................................................................... 64
4.4.4
Accessing a tag with an AT overlay ............................................................................................ 65
4.5
Pulse outputs .............................................................................................................................. 67
5
Easy to create the device configuration ................................................................................................. 71
5.1
5.1
Detecting the configuration for an unspecified CPU ................................................................... 72
5.2
Adding a CPU to the configuration .............................................................................................. 73
5.3
Changing a device ...................................................................................................................... 74
5.4
Adding modules to the configuration ........................................................................................... 74
5.5
Configuring the operation of the CPU and modules ................................................................... 76
5.5.1
System memory and clock memory provide standard functionality ............................................ 77
5.6
Configuring the IP address of the CPU ....................................................................................... 80
5.7
Protecting access to the CPU or code block is easy .................................................................. 82
5.7.1
Know-how protection ................................................................................................................... 84
5.7.2
Copy protection ........................................................................................................................... 85
6
Programming made easy ...................................................................................................................... 87
6.1
6.1
Easy to design your user program .............................................................................................. 87
6.1.1
Use OBs for organizing your user program ................................................................................ 89
6.1.2
FBs and FCs make programming the modular tasks easy ......................................................... 90
6.1.3
Data blocks provide easy storage for program data ................................................................... 92
6.1.4
Creating a new code block .......................................................................................................... 92
6.1.5
Creating reusable code blocks .................................................................................................... 93
6.1.6
Calling a code block from another code block ............................................................................ 94
6.2
Easy-to-use programming languages ......................................................................................... 94
6.2.1
Ladder logic (LAD) ...................................................................................................................... 94
6.2.2
Function Block Diagram (FBD) ................................................................................................... 95
6.2.3
SCL overview .............................................................................................................................. 96
6.2.4
SCL program editor ..................................................................................................................... 96
6.3
Powerful instructions make programming easy .......................................................................... 98
6.3.1
Providing the basic instructions you expect ................................................................................ 98
6.3.2
Compare and Move instructions ............................................................................................... 100
6.3.3
Conversion instructions ............................................................................................................. 101