HeatCurve4P_DN (FB)¶

FUNCTION_BLOCK HeatCurve4P_DN

Short Description¶

Heating curve with four outdoor temperature points and two characteristic curves (night, day).

Portrayal¶

Interfaces¶

Inputs¶

Name
Datatype

Range

Init-Value

Function

rOutTemp REAL -50.0 ... +50.0 °C 0
Outdoor temperature for calculating the characteristic curves

xDay BOOL

FALSE:
Night operation

TRUE:
Day operation

Outputs¶

Name
Datatype

Range

Init-Value

Function

rSupplyTemp REAL 0.0 °C
Supply setpoint temperature of the active characteristic curve

Setpoints / Parameters¶

Name
Datatype

Range

Init-Value

Function

eManModeN eManNum eManNum.Auto
Operating mode for the supply setpoint temperature rSupplyTemp.

rManValue REAL 0.0 °C
Manual value for the eManNum.Man operating mode

rSupplyTempMin REAL 20.0 °C
Absolute minimum supply setpoint temperature

rSupplyTempMax REAL 70.0 °C
Absolute maximum supply setpoint temperature

rTo1 REAL -15.0 °C
Outdoor temperature for point 1

rW1Day REAL 70.0 °C
Supply setpoint temperature for outdoor temperature point 1 - Daytime characteristic curve

rW1Night REAL 65.0 °C
Supply setpoint temperature for outdoor temperature point 1 - Night characteristic curve

rTo2 REAL -5.0 °C
Outdoor temperature for point 2

rW2Day REAL 60.0 °C
Supply setpoint temperature for outdoor temperature point 2 - Daytime characteristic curve

rW2Night REAL 55.0 °C
Supply setpoint temperature for outdoor temperature point 2 - Night-time characteristic curve

rTo3 REAL 5.0 °C
Outdoor temperature for point 3

rW3Day REAL 50.0 °C
Supply setpoint temperature for outdoor temperature point 3 - Daytime characteristic curve

rW3Night REAL 45.0 °C
Supply setpoint temperature for outdoor temperature point 3 - Night-time characteristic curve

rTo4 REAL 15.0 °C
Outdoor temperature for point 4

rW4Day REAL 40.0 °C
Supply setpoint temperature for outdoor temperature point 4 - Daytime characteristic curve

rW4Night REAL 35.0 °C
Supply setpoint temperature for outdoor temperature point 4 - Night-time characteristic curve

rButtonJump REAL 1.0 °C
Function not yet implemented.

rSupplyTempMaxScale REAL 90.0 °C
Maximum temperature for scaling the Y-axis (VISU)

rBorderDistance REAL 3.0 °C
Edge distance to the edge right/left in degrees Celsius for the X-axis (VISU).

Functional Description¶

The supply setpoint temperature rSupplyTemp is dependent on the current outside temperature rOutTemp
and the selected characteristic curve (night characteristic curve: xDay = FALSE // day characteristic curve: xDay = TRUE).
The supply setpoint temperature rSupplyTemp is limited by adjustable absolute minimum (rSupplyTempMin) and
the maximum values ​​(rSupplyTempMax).

The characteristic curves are defined and adjusted respectively by four outdoor temperature points (separated for the night and day characteristic curve).
Each point is defined by an outside temperature and an allocated supply setpoint
temperatur. The four outside temperature points of a characteristic curve are connected by straight lines.

Limitation

rTo4 > rTo3 > rTo2 > rTo1

The parameter eManModeN allows the supply setpoint temperature rSupplyTemp to be switched from automatic to
manual operation and vice versa. In manual mode, the supply setpoint temperature rSupplyTemp assumes the value of
the parameter rManValue.

Visualization¶

Information¶

Element
Authors

Date
Version
Notes

Programming
Adam Bartod, Lukas Pfänder 04.2016 1.0
Initial version

Test Alexander Halter 05.2016 1.0
Initial version

Documentation
Jochen Reu 10.2017 1.0
Initial version

Revision Lukas Pfänder 11.2017 0.1.3.0
Documentation

Codesys¶

InOut:

Scope	Name	Type	Initial	Comment
Input	rOutTemp	REAL	0	Outdoor temperature for calculating the characteristic curves
	xDay	BOOL		Operating mode (FALSE = night operation / TRUE = day operation)
	rBorderDistance	REAL	3	Edge distance to the edge right/left in degrees Celsius for the X-axis (VISU).
	rSupplyTempMaxScale	REAL	90	Maximum temperature for scaling the Y-axis (VISU) - Slider only shown at 90°C!
	rButtonJump	REAL	1	Function not yet implemented.
	rW4Night	REAL	35	Supply setpoint temperature for outdoor temperature point 4 - Night-time characteristic curve
	rW4Day	REAL	40	Supply setpoint temperature for outdoor temperature point 4 - Daytime characteristic curve
	rTo4	REAL	15	Outdoor temperature for point 4
	rW3Night	REAL	45	Supply setpoint temperature for outdoor temperature point 3 - Night-time characteristic curve
	rW3Day	REAL	50	Supply setpoint temperature for outdoor temperature point 3 - Daytime characteristic curve
	rTo3	REAL	5	Outdoor temperature for point 3
	rW2Night	REAL	55	Supply setpoint temperature for outdoor temperature point 2 - Night-time characteristic curve
	rW2Day	REAL	60	Supply setpoint temperature for outdoor temperature point 2 - Daytime characteristic curve
	rTo2	REAL	-5	Outdoor temperature for point 2
	rW1Night	REAL	65	Supply setpoint temperature for outdoor temperature point 1 - Night characteristic curve
	rW1Day	REAL	70	Supply setpoint temperature for outdoor temperature point 1 - Daytime characteristic curve
	rTo1	REAL	-15	Outdoor temperature for point 1
	rSupplyTempMax	REAL	70	Absolute maximum supply setpoint temperature
	rSupplyTempMin	REAL	20	Absolute minimum supply setpoint temperature
	rManValue	REAL	0	Manual value for the eManNum.Man operating mode
	eManModeN	eManNum	eManNum.Auto	Operating mode for the supply setpoint temperature rSupplyTemp.
Output	rSupplyTemp	REAL	0	Supply setpoint temperature of the active characteristic curve