DisplayRealVisu

DisplayRealVisu (FB)

FUNCTION_BLOCK DisplayRealVisu

Short description

Display of a numerical value with correction value (visualization) Typical application: Calibration of a temperature sensor in the visualization Special feature: Unit, decimal places and further parameters are configured directly in the CFC editor and not in the visualization object. This allows changes and limits to be modified online in the application without a download.

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
rInRaw	REAL			Input value

Outputs

Name	Data type	Value range	Initial value	Function
rOut	REAL			Numeric output value

Setpoints / parameters

Name	Data type	Value range	Initial value	Function
xDisableSeparator	BOOL		FALSE	TRUE = Disables the thousands separator in the visualization display
bDecimals	BYTE		1	Number of decimal places
sSymbol	STRING			Symbol in the visualization
sUnit	STRING			Unit of the input value
rOffset	REAL		0.0	Correction value

Function description

General

The output value rOUT is formed by adding the input value rInRaw with the correction value rOffset formed. Additionally, further properties of the output value can be defined here, which however are used not in the function block but, for example, in a suitable visualization element. With the parameter xDisableSeparator the thousands separator in the visualization can be disabled.

Visualization

Matching visualization element from the HVACV Visu Library: DisplayRealVisu

Representation

Interfaces Visu-Element

Name	Data type	Type	Initial value	Function
rValue	FB_EditRealVisu	VAR_IN_OUT		Enter FB instance HVAC.EditRealVisu here e.g. PRG.EditRealVisu
iFieldSizeL	INT	VAR_INPUT	0	Field expands by the number of entered pixels to the left. Required to display long numbers or units.
iFieldSizeR	INT	VAR_INPUT	0	Field expands by the number of entered pixels to the right. Required to display long numbers or units.

The following inputs of the FB HVAC.DisplayRealVisu are automatically adopted and can be changed at runtime: rOffset, sUnit, sSymbol, bDecimals, xDisableSeperator.

Note: VAR_IN_OUT interfaces must be assigned, VAR_INPUT are optional.

CODESYS

InOut:

Scope	Name	Type	Initial
Input	rInRaw	REAL
Input	xAlarm	BOOL
Input Const	xDisableSeparator	BOOL
Input Const	bDecimals	BYTE	1
Input Const	sSymbol	STRING	‘A’
Input Const	sUnit	STRING
Input Const	rOffset	REAL	0
Output	rOut	REAL