Ventilation

The described widget is suitable for displaying a ventilation in the app. The various configuration options are described below. In the figure all available features of the widget are active.

The widget is transferred as a substructure in the overall structure of the SendData() method. To build the widget, various PLC attributes are used when declaring the structure.

{attribute 'iot.ReadOnly' := 'false'}
{attribute 'iot.DisplayName' := 'Name for Widget'}
{attribute 'iot.WidgetType' := 'Ventilation'}
{attribute 'iot.VentilationValueRequestVisible' := 'true'}
{attribute 'iot.VentilationSliderVisible' := 'true'}
{attribute 'iot.VentilationModeVisible' := 'true'}
{attribute 'iot.VentilationModeChangeable' := 'true'}
stVentilationWidgetSample : ST_VentilationWidgetSample;

Attribute	Data type	Description
iot.ReadOnly	BOOL	Determines whether the widget on the app side gets only read access (TRUE) or also additional write access to the PLC (FALSE).
iot.DisplayName	STRING	The display name of the widget in the app. This will be overwritten by sDisplayName as soon as sDisplayName is not an empty string.
iot.WidgetType	STRING	Type specification for the widget, in this case: Ventilation.
iot.VentilationValueRequestVisible	BOOL	Determines whether the requested air value (CO2 concentration) is displayed (TRUE) or not (FALSE).
iot.VentilationSliderVisible	BOOL	Determines whether the slider is displayed (TRUE) or not (FALSE).
iot.VentilationModeVisible	BOOL	Determines whether the mode is displayed (TRUE) or not (FALSE).
iot.VentilationModeChangeable	BOOL	Determines whether the mode is adjustable (TRUE) or not (FALSE).

TYPE ST_VentilationWidgetSample :
STRUCT
    sDisplayName    : STRING := '';
    bOn             : BOOL;
    {attribute 'iot.Unit' := 'ppm'}
    {attribute 'iot.MinValue' := '400'}
    {attribute 'iot.MaxValue' := '1400'}
    nValue          : INT;
    nValueRequest   : INT;
    sMode           : STRING := 'Automatic';
    aModes          : ARRAY[0..1] OF STRING := ['Manual', 'Automatic'];
END_STRUCT
END_TYPE

Attribute	Data type	Description	Display in widget
sDisplayName	STRING	Determines the display name of the widget and overwrites the PLC attribute 'iot.DisplayName'.	Display text of the widget.
bOn	BOOL	Switches the ventilation on (TRUE) or off (FALSE).	Toggle switch top right.
iot.Unit	STRING	Unit of air value (of CO2 concentration).	Unit behind both numerical values.
iot.MinValue	INT	Lower limit of the air value (the CO2 concentration).	On the left side under the slider.
iot.MaxValue	INT	Upper limit of the air value (of the CO2 concentration).	On the right side under the slider.
nValue	INT	Current air value (CO2 concentration).	The number to the left of the arrow.
nValueRequest	INT	Requested air value (CO2 concentration) via the slider.	The number requested via the slider is subsequently displayed on the right side of the arrow.
sMode	STRING	Mode of ventilation.	The currently displayed mode.
aModes	ARRAY [0..n] OF STRING	Array of the different modes that can be set by the user.	By pressing on the current mode, the adjustable modes can be displayed.