Line

The element ‘Line’ is a simple line that is characteristically described by two defined points.

Properties editor

The properties of a visualization element - except alignment and order - can all be configured in the properties editor. By default, this editor opens next to the visualization editor, or it can be opened explicitly via the "Properties" command (which can be found in the View menu as standard).

A property can be modified by editing the field "Value". To this end, an input field, a selection list, a dialog or checkbox that can be activated is provided in this field, depending on the element type. The value field opens

after a double-click,
after a single click in a selected field,
via the space bar, if the field was already selected.

If a variable is assigned,

simply enter its name.
Use the button to open the input assistant for selecting a variable. The Variables category lists all variables that have already been defined in the project.

Working in the list of properties can be made easier with the aid of default, sorting and filter functions.

Element properties

All element properties and their descriptions are listed below.

Element name

The element name can be changed. Standard name is "GenElemInst_x". "x" stands for a sequential number.

Element type

The element type is entered here. For three element groups it is possible to switch between the corresponding elements by changing the element type:

Position

The positions that are characteristic for the visualization element (X/Y coordinates) have to be defined in pixels. The origin is in the top left corner of the window. The positive x-axis is on the right, the positive y-axis runs downwards. If the values are edited, the corresponding element is simultaneously modified in the visualization editor.

The number of points through which the element is defined can be increased or reduced. Selecting one of the points in the visualization editor while pressing the Ctrl key results in this point being duplicated. This automatically adds an entry for a further point in the properties. To delete a point, select it while pressing the Ctrl and Shift keys at the same time. The corresponding entry is then deleted from the properties.

[0] X / Y ..... [n] X / Y

X/Y positions (in pixels) of the individual element points

[0] is the position of the start point. The following points are numbered consecutively.

Horizontal position in pixels.

X=0 is the left-hand edge of the window.

Vertical position in pixels.

Y=0 is the top edge of the window.

Center

When a value is edited, the corresponding element Line 3: is simultaneous moved in the visualization editor.

X	Horizontal position of the element pivot in pixels
Y	Vertical position of the element pivot in pixels

Colors

A color is defined based on a hexadecimal number consisting of red / green / blue (RGB) components. For each of these three colors, 256 (0-255) values are available, which can be entered here statically. The color can be selected from a selection list or via the color selection dialog, which can be opened via the button Line 4: . In addition, the level of transparency can be set for each color (0: fully transparent, 255: fully opaque).

Color	Select a frame and fill color for the default state. If the color switching variable is defined as FALSE, the element is in default state.
Alarm color	Select a frame and fill color for the element in alarm state. This is triggered, if the color switching variable is defined as TRUE.

	Transparency is not supported under Windows CE.

Appearance

Line width

Defines the frame line width in pixels. 0 codes the same as 1 and sets the line width to 1 pixel. If no frame is required, set the line type to invisible.

Line type

Defines one of the following line types for the outline:

solid
dashed
dotted
dotdash
dash dot dot
Invisible: outline is invisible.

Texts

These properties are used for a static definition of the element labelling. Each can contain a formatting sequence, e.g. %s. In online mode the sequence is replaced by the contents of the variables defined in "Text variables".

Text

Enter a text. It is used to label the element. The text can contain a formatting sequence, e.g. %s. The corresponding variable is defined in "Text variables".

Note: The text can also be entered directly. If the element is selected in the visualization editor, an input field can be opened by pressing the space bar.

Tooltip

Enter a text. It is used as a tooltip for the element and appears in the visualization only in online mode when the cursor is placed over an element. The text can contain a formatting sequence, e.g. %s. The corresponding variable is defined in "Text variables".

Text properties

These properties are used for a static definition of the font. A dynamic definition of the font is possible in the category "Font variables".

Horizontal alignment	Defines the horizontal alignment of the text through selection of: Left Centered Right
Vertical alignment	Defines the vertical alignment of the text through selection of: Top Centered Bottom
Text format	Defines the display of a text that is too long to be displayed completely in an element: Default – the text extends beyond the element. Line break – the text is automatically wrapped. Ellipsis - the text is displayed as far as possible and then truncated with "...".
Font:	Defines the font through selection from predefined fonts: Standard Heading Large heading Title Note Press to opens the dialog for user-defined font properties.
Font color	Defines the font color for the element. Either from the selection list or via the dialog that opens when is clicked.

Absolute movement

The element can be moved by changing the x- and y-position (pixels) of the top left corner of the element via an integer variable. Absolute coordinate values are used here.

Motion X Y	X: The integer variable entered here defines the current x-position of the top left corner of the element (in pixels). It can be used to move the element in x-direction. (A positive value moves the element from left to right). Y: The integer variable entered here defines the current y-position of the top left corner of the element (in pixels). It can be used to move the element in y-direction. (A positive value moves the element from top to bottom).
Rotation	The integer variable entered here defines the angle (angular degrees) for rotating the element around a rotation point. Positive values = clockwise Note: In contrast to the behavior with ‘internal rotation’ (see below), the element itself does not rotate. Click on the element to show the rotation point . It can be moved by pressing and holding the mouse button.
Scaling	The integer variable entered here defines the current scaling factor (percent). The element size is adjusted linearly according to this value. The value is implicitly divides by 1000, so that it is not necessary to use REAL variables in order to shrink the element. The scaling always refers to the rotation point (center). Click on the element to show the rotation point . It can be moved by pressing and holding the mouse button.
Internal rotation	The integer variable entered here defines the angle (angular degrees) by which the element is rotated around its rotation point; positive values=mathematically positive=clockwise. In contrast to "Rotation" (see above), the element itself rotates. Click on the element to show the rotation point (center) . It can be moved by pressing and holding the mouse button.

Relative movement

The element can be moved relative to its fixed position. The top left and bottom right edges of the element are moved in x- or y-direction by a value (pixels) defined by an integer variable. In contrast to an absolute movement, a relative position is defined, i.e. the distance to the original position. This function can be used to change the shape of the element. Positive values move the horizontal edges downwards and/or the vertical edges to the right.

Movement point [n]

X: Integer variable, the value of which indicates the number of pixels by which the point[0] / point[1] is moved in x-direction.
Y: Integer variable, the value of which indicates the number of pixels by which the point[0] / point[1] is moved in y-direction.

Text variables

You can display text that is stored in a variable. To do this, first add a formatting sequence in the text that is defined under the "Texts" property. Then assign a variable. In online mode the formatting sequence is replaced by the contents of the variables.

Example %f:

Enter "Result: %2.5f" in the "Texts" property. Enter "fValue" in the "Text variables" property. The variable must be a defined IEC variable. The element will then be labeled in online mode with "Result: 12.12345" if fValue = 12.1234567.

Text variable	Variable (of default data type) containing the information to be displayed. The type must match the formatting sequence in the "Texts" setting.
Tooltipvariable	Variable of type String containing the tooltip text to be displayed. The entry in the property "Texts" must contain a formatting sequence.

Dynamic texts

These parameters are used to define dynamic texts originating from text lists. This enables language change, for example.

A further possibility to define a text dynamically is to supply the text via a string variable. (see the category "Text variables")

Text list

Name of the text list, as used in the project tree, as a string

Example: 'TL_ErrorList'

Textindex

Index (ID) of the text, as defined in the text list, as a string. It can be specified directly in a static manner or as a string variable.

Tooltipindex

Index (ID) of the tooltip text, as defined in the text list, as a string. It can be specified directly in a static manner or as a string variable.

Font variables

These variables are used for dynamic font definitions for element texts via project variables. Static definitions are configured under "Text properties".

Font name	Specification of a variable of the type String that contains the font name that is to be used to label the element. (name specified as in the standard font dialog) Example: MAIN.sFont (sFont := ‘Arial’;)
Size	Variable of type INT containing the size of the element text in pixels, as in the default dialog ‘Font’. Example: MAIN.nHeight (nHeight := 16;)
Flags	Variable of type DWORD for defining the font display via one of the flag values listed below. A combined definition can be achieved by adding the respective flag values and specifying the sum. 1: italics 2: bold 4: underlined 8: deleted Example: MAIN.nFlag (nFlag := 6;) The text is shown bold and underlined.
Character set	The character set to be used for the font can be defined via the default font number. This number can be specified via a DWORD variable (see also the definition in the default font dialog)
Color	Variable of type DWORD for defining the color of the element text.
Flags for the text alignment	Variable of type DWORD for defining the text alignment via one of the flag values listed below. A combined definition can be achieved by adding the respective flag values and specifying the sum. 0: top left 1: centered horizontally 2: right 4: centered vertically 8: below Example MAIN.nFlag (nFlag := 5;) The text is displayed centered horizontally and vertically.

Color variables

The color variables used for dynamic definition of the element colors via project variables of type DWORD. A color is defined based on a hexadecimal number consisting of red, green and blue (RGB) components. In addition, the variables are used to specify the transparency of the color (FF: fully opaque - 00: fully transparent). The DWORD has the following structure: 16#TTRRGGBB

	The structure of the hexadecimal number differs from TwinCAT 2. In TwinCAT 3 it is possible to define the transparency of the color with the hexadecimal number in addition to the RGB proportions. The transparency is indicated by the first two digits after "16#". Colors with definitions starting with "16#00" are invisible, since they are fully transparent.

Example:

nFillColor := 16#FF8FE03F;

FF: transparency (fully opaque)
8F: red
E0: green
3F: blue

Color change	Boolean variable, which controls the switching of the element color between "normal state" (variable = FALSE) and "alarm state" (variable = TRUE).
Normal state	Variable of type DWORD for defining the element color. It overwrites the value that is currently defined in "Colors". The value in the project variable is used, if the variable defined in "Color change" is FALSE.
Alarm state	Variable of type DWORD for defining the element color in alarm state. It overwrites the value that is currently defined in "Colors". The value in the project variable is used, if the variable defined in "Color change" is TRUE.

	Transparency is not supported under Windows CE.

State variables

These are dynamic definitions of the availability of the element in online mode.

Invisibility

Specification of a boolean variable. If this returns TRUE, the element is invisible in online mode.

Input disabled

Specification of a boolean variable. If TRUE is returned, inputs for the element have no effect. Also, the element itself is greyed out in the visualization, to indicate that no user inputs are possible.

If the visualization uses the user management, the elements for user groups with access right "only visible" are grayed out.

Line type variable

Dynamic definition the line type via a variable.

Integer value

Integer variable for specifying data types. The value defines the line type. The following variable values are supported:

0 = solid
1 = dashed
2 = dotted
3 = dotdash
4 = dash dot dot
8 = invisible: The line is invisible.

This overwrites the fixed value specified in the category "Appearance".

Line width variable

Dynamic definition of the width of a line element via a variable.

Integer value

Variable of type integer for defining the line width of the element in pixels. This overwrites the fixed value specified in the category "Appearance". Not that a code of 0 has the same effect as 1, and the line width is set to 1 pixel.

Input configuration

Here you can define the consequential action that should be performed when the user makes an input in the element in online mode. As long as no follow-on actions are defined, "Configure…" appears in the Properties field. Click on "Configure…" to open the Input Configuration, where you can assign follow-on actions. Each input action can be assigned any number of follow-on actions.

The following input events are available for an element:

OnDialogClosed
OnMouseClick
OnMouseDown
OnMouseEnter
OnMouseLeave
OnMouseMove
OnMouseUp

OnDialogClosed	This event is triggered if one of the dialog boxes that were opened for user inputs is closed within a visualization. Note: This property is not limited to the element, for which it is configured, but applies within the entire visualization. It therefore does not respond to each dialog closing action. Currently there is no way to define such a property for the entire visualization. It therefore has to be assigned to one of its elements.
OnMouseClick	This mouse event is triggered when the cursor points to an element and a full mouse click (pressing and releasing the mouse button) is executed on this item.
OnMouseDown	This mouse event is triggered when the mouse button is pressed while the cursor points to an element. It is irrelevant where on the visualization the mouse button is released again.
OnMouseEnter	This mouse event is triggered when the cursor is dragged to the element. It is irrelevant whether the mouse button is pressed or released.
OnMouseLeave	This mouse event is triggered when the cursor leaves the element. It is irrelevant whether the mouse button is pressed or released.
OnMouseMove	This mouse event is triggered when the cursor is moved within the element. It is irrelevant whether the mouse button is pressed or released.
OnMouseUp	This mouse event occurs when the mouse button is released on the element. The mouse button was pressed prior to that outside of the element.

Input configuration - hotkeys

A hotkey can be used to define a key or key combination and link it with a follow-on action (e.g. MouseDown, MouseUp), which is to be executed when a key event occurs (KeyDown, KeyUp). By default the MouseDown action is executed on KeyDown (press key) and the MouseUp action on KeyUp (release key). This can be useful if a visualization is to be operated both via mouse actions and keyboard entries, since the input actions then only have to be configured once. The key configuration for an element is also managed in the hotkeys configuration for the visualization. Any changes are always synchronized between this and the element properties editor.

Key	Assigning a key. A selection list contains all currently supported keys, e.g. M.
Event(s)	Definition of the event to be executed, if the key or key and modifier are used. Possible values that are available in a selection list: No action MouseDown action when the key is pressed MouseUp action when the key is released MouseDown/MouseUp action when the key is pressed/released
Shift	If this option is enabled, the key has to be used in combination with the Shift key.
Control	If this option is enabled, the key has to be used in combination with the Ctrl key.
Alt	If this option is enabled, the key has to be used in combination with the Alt key.

Input configuration – Keys

"Keys" can be used to specify that the value of a boolean project variable is set depending on the mouse behavior for the event "Keys".

Variable	Boolean variable whose value is TRUE if the mouse button is pressed while the cursor points to the element. The value becomes FALSE again when the mouse button is released or the cursor leaves the element.
FALSE keys	If this option is enabled, the key behavior described above is reversed for the corresponding variable. That is, when the mouse button pressed, the variable value is set to FALSE. When the button is, the variable value is set to TRUE.
Switch on enter if mouse trapped	If this option is enabled, the variable value behaves as described under ‘Variables’, as long as the cursor is within the element area. If the cursor leaves the element area while the mouse button is pressed, the variable is set to FALSE. However, it is automatically set to TRUE again, if the cursor returns to the element area without the mouse button being released. In other words, the system takes into account that the mouse is "trapped" as long as the mouse button is pressed, even if the cursor leaves the element area.

Input configuration - Switching

"Switching" can be used to specify that for this event the value of a boolean project variable is set depending on the mouse behavior.

Variable

Boolean variable whose value switches between TRUE and FALSE with each mouse click on the element. No switching occurs if the cursor is moved away from the element while the mouse button is pressed. Can be used to cancel a switching action.

Switch on release, if mouse trapped

If this option is enabled, the variable value behaves as described under ‘Variables’, as long as the cursor is within the element area. If the cursor leaves the element area while the mouse button is pressed and the mouse button is then released, the variable is switched anyway. In other words, the system takes into account that the mouse is “trapped” as long as the mouse button is pressed, even if the cursor leaves the element area.

Access rights

This setting relates to the access rights for the individual element. Click to open the Access rights dialog. The setting is only available if a user management was added to the PLC project. The following status messages are available:

Not set. All rights.	The default message is set, if the element is shown as available for all groups.
Rights are issued: Limited rights.	The message is set, if the element is shown with limited behavior for at least one group.