Date:30.09.2014 File:GRAPH_02e.1 SIMATIC S7 Siemens AG 2000. All rights reserved. SITRAIN Training for Automation and Drives Project Planning and Configuration.

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Date: File:GRAPH_02e.1 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Project Planning and Configuration.
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Conditional Statements. Program control statements modify the order of statement execution. Statements in a C program normally executes from top to bottom,
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Date: File:GRAPH_02e.1 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Project Planning and Configuration

Date: File:GRAPH_02e.2 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Planning and Configuration

Date: File:GRAPH_02e.3 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Step: Step No. (No. max. 999) and step name (max. 24 contiguous characters) Initial step: Execution start without querying a start transition after sequencer RESET (INIT_SQ) or return jump or initial start of the sequencer Transition The transition contains the conditions which allow mode- dependent enabling from one step to the successor step. S3 Step 3 S1 Step 1 T5 trans5 Основные элементы последовательности (1)

Date: File:GRAPH_02e.4 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives S xxx End of sequencer Программа отключается полностью, когда достигнут конец программы. Программа может быть начата снова только выбором разрешенного шага в этой программе (например, начальный шаг или через выбор шага) Приложения: Задачи, которые выполняются однократно, например, approach / retract program Jump to a step (вперед или назад) Application: cyclic execution, machine loop Основные элементы последовательности (2)

Date: File:GRAPH_02e.5 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Open alternative branch Application: left branch error-free, right branch with errors Только один переход может быть активен в автоматическом и inching режимах. Переход в левой ветви всегда имеет приоритет 1, все другие перемещения согласно порядку расположения. Исполнение - сверху вниз и слева направо. Close alternative branch The corresponding branch is also closed for execution to the left. Evolution is from top to bottom and right to left. 1st priority2nd priority Priority sequence in limit case: all Tx simultaneously satisfied Основные элементы последовательности (3)

Date: File:GRAPH_02e.6 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Open simultaneous branch Synchronization of all associated steps after the opening branch in the same PLC cycle. Then each branch is independently executed. Possible to enable all branches in the same PLC cycle First steps are also called opening steps Close simultaneous branch Synchronization at joining, i.e. all branches wait for one another until all steps preceding the closing branch are active. Only then is execution switched simultaneously to the left branch via the successor transition. Last steps are also called closing steps. Основные элементы последовательности (4)

Date: File:GRAPH_02e.7 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Основные элементы последовательности (5)

Date: File:GRAPH_02e.8 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Display always as S7-GRAPH sequencer Save Save As... Open/ Insert GRAPH source Source files Save Save As... Open/ Insert S7 block Blocks S1 Generate Source Compile (Compiler) Test run possible!No test run possible! Sequencer as FB S13 T1T13 Sequencer as GRAPH source file S1S13 T1T13 S1 Symbols Entry/use in STEP 7 symbol list Сохранение последовательности

Date: File:GRAPH_02e.9 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Создание, загрузка и сохранение последовательности как исходного файла GRAPH

Date: File:GRAPH_02e.10 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Как использовать редактор исходников S7 - GRAPH

Date: File:GRAPH_02e.11 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Важно: Перед открытием FB вы должны выбрать "GRAPH" как язык, на котором создается блок! (это нельзя изменить позднее) Создание, загрузка и сохранение последовательности как FB

Date: File:GRAPH_02e.12 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives INI 1 индуктивный датчик LS 1 Фотодатчик M 1 Мотор H 1 Светодиод S 1 Кнопка подтверждения L R Конечная сборка Bay 1 Вкл/Выкл линии S 1 S 2 S 3 T 1 T 2 ? Упражнение (1): Сборочная линия с 1 участником

Date: File:GRAPH_02e.13 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives S 1 S 2 S 3 T 1 T 2 Упражнение (1): Сборочная линия с 1 участником (Contd.)

Date: File:GRAPH_02e.14 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Сборочная линия с 1 участником S 1 S 2 S 3 T 1 T 2 Упражнение (2): Сохранение последовательности как FB1 (+DB1)

Date: File:GRAPH_02e.15 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Сборочная линия с 1 участником S 1 S 2 S 3 T 1 T 2 Упражнение (3): Проверка FB1 (+DB1) в STEP 7