FB_BA_H_OpMod

The FB_BA_H_OpMod template represents the operation mode and enable of a heating circuit.

The OpModSwi priority switch prioritizes various events or commands such as heating circuit fault, requests from the schedule or requests from the plant selector switch and writes a resulting operation mode or system status to the eOpMode variable.

eOpMode	Value	Operation mode1
E_BA_EnergyLvl.eProtection	1	Protection
E_BA_EnergyLvl.eEconomy	2	Economy
E_BA_EnergyLvl.eComfort	3	Comfort

	The initialization of the template takes place within the method FB_Init.

Block diagram

Syntax

FUNCTION_BLOCK FB_BA_H_OpMod EXTENDS FB_BA_View
VAR_INPUT
  bDst             : BOOL;
  bHtgLmt          : BOOL;
  bTWthLowLimit    : BOOL;
END_VAR
VAR_OUTPUT
  eOpMod           : E_BA_EnergyLvl;
  bRls             : BOOL;
END_VAR
VAR_INPUT CONSTANT
  OpModMan         : FB_BA_MV_Op;
  Sched            : FB_BA_SchedM;
  OpModPr          : FB_BA_MV_Op; 
  Rls              : FB_BA_BV_Op;
END_VAR
VAR
  OpModSwi         : FB_BA_PrioSwi_UDI08;
  RlsMMux          : FB_BA_MMUX_B04;
END_VAR

Inputs

Name	Type	Description
bDst	BOOL	Heating circuit fault input.
bHtgLmt	BOOL	Heating mode enable input.
bTWthLowLimit	BOOL	The variable indicates that the outside temperature has fallen below the lower limit and the frost protection function is active.

Outputs

Name	Type	Description
eOpMode	E_BA_EnergyLvl	Display of the current operation mode of the heating circuit.
bRls	BOOL	Heating circuit enable output depending on the multiplexer RlsMMux.

Inputs CONSTANT

Name	Type	Description
OpModMan	FB_BA_MV_Op	The MV object serves as plant selector switch. The following operation modes can be set: Auto, Protection, Economy and Comfort. The Auto operation mode means that the Sched schedule specifies the operation mode.
Sched	FB_BA_SchedM	Schedule for switching between the Protection, Economy and Comfort operation modes.
OpModPr	FB_BA_MV_Op	Current operation mode of the heating circuit.
Rls	FB_BA_BV_Op	Indicates the enable of the heating circuit.

Variables

Name	Type	Description
OpModSwi	FB_BA_PrioSwi_UDI08	Priority switch for the operation modes of the heating circuit.
RlsMMux	FB_BA_MMUX_B04	The multiplexer converts the eOpMod operation mode into the bRls enable.