`VisuFbXYChartDataProvider` (FB)

FUNCTION_BLOCK VisuFbXYChartDataProvider IMPLEMENTS IXYChartDataProvider3

This function block is the implementation of the IXYChartDataProvider interface. It is used by the generated code to provide suitable instances of this interface. An instance of this is present in generated code only

InOut:

Scope	Name	Type	Comment
Input	`iNumOfAxes`	`INT`	Axes designed by the customer using configuration page Here I’ve: 1) the number of the axes 2) a pointer to array of pointers of structures containig the axis data. Each cell can contain a structure allocated by the customer in IEC code and next assigned into configuration page or, if not, an automatic allocation of the same structure done by the system. In the first case customer can manipulate the data at run time, in the second case not a pointer to array of BOOL to know if the variable used is local or user defined a pointer to array of pointers of structures containig the axis properties written by generated code, from SP16.
	`paAxisVar`	POINTER TO ARRAY [0..20] OF POINTER TO VisuStructXYChartAxis
	`paAxisIsLocVar`	POINTER TO ARRAY [0..20] OF BOOL
	`paAxisVarProper`	POINTER TO ARRAY [0..20] OF POINTER TO VisuStructXYChartAxis
	`iNumOfCurves`	`INT`	Curves designed by the customer using configuration page Here I’ve: 1) the number of the curves 2) a pointer to array of pointers of structures containig the curve data. Each cell can contain a structure allocated by the customer in IEC code and next assigned into configuration page or, if not, an automatic allocation of the same structure done by the system. In the first case customer can manipulate the data at run time, in the second case not a pointer to array of BOOL to know if the variable used is local or user defined a pointer to array of pointers of structures containig the curves properties written by generated code, from SP16.
	`paCurveVar`	POINTER TO ARRAY [0..20] OF POINTER TO VisuStructXYChartCurve
	`paCurveIsLocVar`	POINTER TO ARRAY [0..20] OF BOOL
	`paCurveVarProper`	POINTER TO ARRAY [0..20] OF POINTER TO VisuStructXYChartCurve
	`pElementVar`	POINTER TO VisuStructXYChart	Pointer to the XY element structure, either the customer one or the system one, depending on if the customer has allocated the his one
	`xElementIsLocVar`	`BOOL`	Points to the XY element structure
	`pElementVarProper`	POINTER TO VisuStructXYChart	If the variable used is local or user defined
	`eUpdateType`	EnXYChartUpdateType	Points to the XY system element structure where the generated code writes the properties defined at design time, from SP16 Update type
	`itfUpdateVar`	IXYChartGenericVariable	Type of update used for element
	`itfAutoUpdEnaVar`	IXYChartGenericVariable	update variable
	`pItfDataProviderCurve`	POINTER TO ARRAY [0..20] OF IXYChartDataProviderCurve	Automatic update enable variable Pointer to the interfaces of curves data provider
	`pItfDataProviderAxes`	POINTER TO ARRAY [0..20] OF IXYChartDataProviderAxis	Pointer to the interfaces of axes data provider
	`itfCursXPosVar`	IXYChartGenericVariable	Variable of X axis value at cursor position, if present
	`paAxisStruWD`	POINTER TO ARRAY [0..20] OF StruXYChartWorkingDataAxis	These data are instantiated in generated code, but not use there Because these data are “number of axes/curves depending”, I’ve defined them in generated code where I know those numbers In this way I don’t need dynamic allocation memory in IEC code
	`paCurveStruWD`	POINTER TO ARRAY [0..20] OF StruXYChartWorkingDataCurve	Data for single curve elaboration, working data
	`pClientData`	POINTER TO VisuStructClientData	Variables used to get the correct data in case of “multiclient” (see “IsMultiClient” method to see more general comment)
	`pClientSpecificData`	POINTER TO StruXYChartClientSpecificData
	`xMultiClient`	`BOOL`

Methods:

GetAxisFontLabel

GetDataProviderCurve

GetLineLevelFont

GetLineLevelStruct

GetNumberOfAxes

GetNumberOfCurves

GetPntAxis

GetPntCurve

GetPntData

GetPntWorkingDataAxis

GetPntWorkingDataCurve

GetUpdateType

GetVariableItf

IsAxisVarLocal

IsCurveVarLocal

IsElementVarLocal

GetDataProviderAxis

GetPntAxisProper

GetPntCurveProper

GetPntDataProper

SetMultiClientData

Structure:

VisuFbXYChartDataProvider (FB)

`VisuFbXYChartDataProvider` (FB)