System Manual: Siemens SIMATIC HMI (WinCCv7.0: Scripting VBS, ANSI-C, VBA)

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Processing actions in Graphics Designer

The following rules apply to processing actions in Graphics Designer:

● No event-driven actions can be executed as long as another event-driven action is running.

● No cyclic/tag triggered actions can be executed as long as another cyclic/tag triggered

action is running.

● The two action types do not affect each other: An event-driven action can also be executed

when a cyclic action is already in progress.

● If the execution of actions is blocked by other actions (e.g. a cyclic action by a tag-triggered

action),

each action which is blocked is executed once at the next possible moment. Cyclic

actions then run in their normal intervals after the one-off execution.

Processing actions in Global Script

Picture-based actions from Global Script are executed in Runtime in succession after being

triggered. When an action is triggered while another action is in progress, the second action

is kept in a queue until it can be executed.

Actions in Global Script and Graphics Designer do not affect each other.

Note

If the action should not be executed at each event, it is possible to define a condition in the

action, the result of which controls whether the action is executed or not.

Notes on configuring triggers

Depending on the system, it cannot be guaranteed that an action with a cyclic trigger will be

carried

out at exactly the specified time. If this is a requirement, then the task (such as a check)

should be implemented on the automation device.

The tag triggers should have priority over cyclic triggers: With cyclic actions, the action is

always executed, e.g. every 20 seconds. The tag trigger only executes the action if a change

in the value of the tag has been detected in the case of cyclic queries. This reduces the load

on the system and increases performance.

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If a tag trigger is used, configure the "Upon Change" cycle to start as seldom as possible. This

query cycle causes the tag to trigger the action following every change. This causes high

system loads.

Linking tag triggers

The CrossReference from WinCC can be used to quickly find all the application points of tags,

even in VBS actions. Tag triggers in actions in Graphics Designer can be "linked" using

CrossReference, i.e. replaced by other tags at all or selected points.

Note

Tags can also be directly linked in Graphics Designer by marking the graphic object and

selecting the "Linking ..." command from the context menu.

Use the standard formulations

HMIRuntime.BaseScreenName = "Screenname" and

HMIRuntime.Tags("Tagname") when addressing pictures and tags in your code in order

to ensure that the pictures and tags are registered by the CrossReference.

Further information on CrossReference is available in the WinCC documentation.

See also

Actions (Page 21)

How to delete a trigger (Page 79)

How to change a trigger (Page 78)

How to add a trigger of the type "Tag" (Page 76)

How to add a trigger of the type "Timer" (Page 74)

Creating and Editing Actions (Page 55)

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1.10 Creating and Editing Actions

MDM - WinCC: Scripting (VBS, ANSI-C, VBA)

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1.10.7.2 Animation trigger

Animation trigger

As of WinCC V7.0, the "animation cycle" trigger art is available for the dynamization of objects

with

VBS. The animation cycle allows you to switch actions on and off in Runtime and to change

the time, in which the trigger is executed. The following cycles are possible:

Name Cycle Name Cycle

CycleTime125ms 125 ms CycleUser1 User cycle 1

CycleTime250ms 250 ms CycleUser2 User cycle 2

CycleTime500ms 500 ms CycleUser3 User cycle 3

CycleTime1s 1 s CycleUser4 User cycle 4

CycleTime2s 2 s CycleUser5 User cycle 5

CycleTime5s 5 s CyclePicture Picture cycle

CycleTime10s 10 s CycleWindow Window Cycle

CycleTime1min 1 min

CycleTime5min 5 min

CycleTime10min 10 min

CycleTime1h 1 h

You use the trigger by writing an action and using the "animation cycle" trigger type. This action

can be activated or deactivated in Runtime with the "ActivateDynamic" and

"DeactivateDynamic" methods. The methods are described in the VBS reference of the WinCC

Information System. The correct syntax of the methods deviates from the description in the

VBS reference and is shown in the following two examples.

With a VBS action at the determined property "Position X" (left), the rectangle is shifted 5 pixels

to the right. Select the "animation cycle" event in the action as the trigger.

Enter the following as the VBS action in the "Left" property:

item.Left = item.Left + 5

You can switch the action on and off at the property "Position X" with the following VBS actions.

The trigger is switched on in Runtime with the "ActivateDynamic" method:

Dim obj

Set obj = ScreenItems.Item("Rectangle1")

obj.ActivateDynamic "Left", "CycleTime1s"

The trigger is switched off in Runtime with the "DeactivateDynamic" method:

Dim obj

Set obj = ScreenItems.Item("Rectangle1")

obj.DeactivateDynamic "Left"

Note

The WinCC tags remain requested even when the trigger is switched off.

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1.10.7.3 How to add a trigger of the type "Timer"

Introduction

"Timer"

type triggers execute an action at a certain time. "Timer" type triggers can be cyclic or

acyclic triggers.

● Acyclic triggers Trigger an action once at the configured time.

● Cyclic triggers Trigger an action at regular intervals. The time interval and start time for the

time must be triggered. If a standard cycle is selected as the cyclic trigger, the start time is

always the start of Runtime. User-specific cycles can also be selected as standard cycles.

Note

Cyclic triggers guarantee a high updating rate of the system but require high system loads.

Choose cyclic triggers only for those actions, where the update is very important.

With high system loads, some actions may not be executable.

"Timer" type triggers are used to make the properties in Graphics Designer dynamic and

execute global actions.

Procedure

1. Open the action.

Click the button "Info/Trigger" in the toolbar or choose the pop-up menu command "Info".

The "Properties..." dialog appears.

3. Select the "Triggers" tab control.

4. Select the "Timer" trigger and then select the trigger type to be created: cyclic or acyclic.

5. Click on the "Add" button. The "Add Trigger" dialog appears.

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6. If the "acyclic" trigger type has been selected: Enter a relevant trigger name and define the

time at which the action should be executed.

7. If the "cyclic" trigger type has been selected: Enter a relevant trigger name and define the

start time at which the action should be executed for the first time. Enter a cycle at which

the action should be repeated.

Click OK to confirm your entries.

Note

An action can be assigned several triggers. The action is always executed when one of the

triggering events occurs.

See also

How to delete a trigger (Page 79)

How to add a trigger of the type "Tag" (Page 76)

Triggers (Page 69)

Creating and Editing Actions (Page 55)

Actions (Page 21)

VBS for Creating Procedures and Actions

1.10 Creating and Editing Actions

MDM - WinCC: Scripting (VBS, ANSI-C, VBA)

System Manual, 11/2008,

1.10.7.4 How to add a trigger of the type "Tag"

Introduction

"Tag" type triggers execute an action following the change of a tag value. Any internal or

external tag stored in WinCC can be used as a trigger tag.

Actions with tag triggers can be executed at the following times:

● On change of tag: The action is executed each time the tag value changes. Since this

setting causes a very high system utilization, the updating rate should be set as low as

possible.

● Query the tag status according to standard cycle (including user cycles): Define a cycle in

whose

intervals the tag value should be queried. The action is only executed when the tag

value has changed when queried. When the query status is a large value, it is possible that

the tag value changes but it is not detected by the system. In this case the action will not

be performed.

If an action is linked with several tags, the action is executed when one of the tag values

changes.

Procedure

1. Open the action.

Click the button "Info/Trigger" in the toolbar or choose the pop-up menu command "Info".

The "Properties..." dialog appears.

3. Select the "Triggers" tab control.

4. Select "Trigger" as the tag.

5. Click on the "Add" button. The "Add Trigger" dialog appears.

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6. Enter the name of the tag to be used as the trigger or click the button beside the "Tag Name"

field in order to select a tag from the tag selection dialog.

7. Double click on the "Standard cycle" field to open the selection dialog for the tag update

cycle:

Select a cycle and click on OK to confirm the selection.

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1.10 Creating and Editing Actions

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See also

How to delete a trigger (Page 79)

How to add a trigger of the type "Tag" (Page 76)

How to add a trigger of the type "Timer" (Page 74)

Triggers (Page 69)

Creating and Editing Actions (Page 55)

Actions (Page 21)

1.10.7.5 How to change a trigger

Introduction

A defined trigger can be modified at any time, even during Runtime.

Procedure

1. Open the action whose triggers should be modified.

Click the button "Info/Trigger" in the toolbar

or choose the pop-up menu command "Info/Trigger". The "Properties..." dialog appears.

Alternatively, call in the dialog without executing the action by double clicking on the trigger

in the navigation window.

3. Select the "Triggers" tab control.

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4. Select the trigger to be modified and click the "Change" button.

5. Modify the trigger can confirm the entries with OK.

See also

Triggers (Page 69)

How to delete a trigger (Page 79)

How to add a trigger of the type "Tag" (Page 76)

How to add a trigger of the type "Timer" (Page 74)

Creating and Editing Actions (Page 55)

Actions (Page 21)

1.10.7.6 How to delete a trigger

Introduction

Defined triggers can be deleted at any time. Triggers can also be deleted during Runtime.

If a trigger is deleted during Runtime, it takes effect after saving the action.

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1.10 Creating and Editing Actions

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Note

Actions without trigger are not executed in Runtime. None of the actions which used the

deleted trigger are executed any longer.

Procedure

1. Open the Global Script Editor or the Graphics Designer action editor.

2. Open the action.

Click the button "Info/Trigger" in the toolbar or choose the pop-up menu command "Info".

The "Properties..." dialog appears.

4. Select the "Triggers" tab control.

5. Select the trigger to be deleted and click the "Delete" button.

6. The trigger is deleted immediately.

Note

Triggers can also be deleted directly in the Global Script navigation window using the "Delete"

command in the context menu.

VBS for Creating Procedures and Actions

1.10 Creating and Editing Actions

MDM - WinCC: Scripting (VBS, ANSI-C, VBA)

System Manual, 11/2008,