FB_BA_RollerblindZone

In a blind zone, one or more blinds are combined for simultaneous control, depending on the local conditions. The template bundles the predefined data of the facades and decides on the basis of a zone presence detection and local selection and deselection which functionality is active.

Together with the resulting telegram of high-priority functions from the facade, these functionalities are placed on a telegram selector at the end of the template. This then uses the priority to decide which telegram in the higher-level room template is passed on to the blinds.

Functions

• Manual function
  The zone template contains a manual function that enables manual control of the blind via the key functions bSwiUp/bSwiDwn. The switchover time to latching, nSwiOverTi [ms], is pre-parameterized to 250 ms. The manual function is deleted via the input bRstManFnct (inherited from the base class FB_BA_Ext_SunblindPosition (internal function block)).

• Thermal automatic
  Thermal automatic is considered active if it is selected locally (parameter bThAutoSlcn), if no presence is detected (input bPrcDetc) and the facade template FB_BA_Facade has determined the release for this building side. If it is active, the positioning is decided on the basis of the room temperature (input fRoomTempSen) and the building setpoints for heating and cooling: If the room temperature is above the building value for comfort cooling, the blinds move to a predefinable position. If, on the other hand, the temperature drops below the value for comfort heating, the blinds will open completely.
• Automatic sun protection
  In contrast to the thermal automatic, the automatic sun protection is only active when presence is detected (input bPrcDetc). It must also be selected locally (parameter bSunPrtcSlcn) and be enabled by the facade template, among other things by the direction-dependent brightness. The blind position is also determined in the facade.
• Twilight automatic
  The twilight automatic is enabled in the facade on the basis of the brightness values. If the automatic for the zone is selected (input bTwiLgtAutoSlcn) the blind moves to a predefined position in case of twilight (parameter fTwiLgtAutoPos).

Input stReferenceFeedback

Information about the controlled blind actuator or the reference actuator of a group is fed back into the blind control function via this input.

These are the position details and status of the reference actuator.

Data exchange HMI

The data exchange with the HMI is realized here in the base class FB_BA_Ext_SunblindPosition (internal function block). The use of the following variables is visible in this template:

• bResetManual_In: Command from the HMI to delete the manual function.
• fSunblindPosition_Out: Output information position to the HMI.
• bOpened_Out: Output information "Blind completely open" to the HMI.
• bClosed_Out: Output information "Blind completely closed" to the HMI.
• bErr_Out: Output information "Reference actuator faulty" to the HMI.
• eActualPrio_Out: Currently controlling telegram priority to the HMI.

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

Block diagram

Syntax

FUNCTION_BLOCK FB_BA_RollerblindZone EXTENDS FB_BA_Ext_SunblindPosition
VAR_INPUT
  fRoomTempSen           : REAL;
  bPrcDetc               : BOOL;
  bSwiUp                 : BOOL;
  bSwiDwn                : BOOL;
  bRstManFnct            : BOOL;
  stBuildingSpRmT        : ST_BA_SpRmT;
  stFacade               : ST_BA_Facade;
  stScene                : ST_BA_Sunbld;
  stReferenceFeedback    : ST_BA_SunblindActuatorFeedback;
END_VAR
VAR_OUTPUT
  stSunBldOut            : ST_BA_SunBld;
END_VAR
VAR_INPUT CONSTANT PERSISTENT
  bThAutoSlcn            : BOOL;
  fThAutoColPos          : REAL;
  bSunPrtcSlcn           : BOOL;
  bTwiLgtAutoSlcn        : BOOL;
  fTwiLgtAutoPos         : REAL;
  nSwiOverTi             : UDINT;
END_VAR
VAR_INPUT CONSTANT
  ManSwi                 : FB_BA_SunBldSwi := (ePrio:= E_BA_SunBldPrio.eManualGroup);
  ThAuto                 : FB_BA_SunBldEvt := (ePrio:= E_BA_SunBldPrio.eGroupThermoAuto);
  SunPrtc                : FB_BA_SunBldEvt : = (ePrio:= E_BA_SunBldPrio.eSunProtection);
  TwiLgtAuto             : FB_BA_SunBldEvt := (ePrio:= E_BA_SunBldPrio.eGroupTwiLightAuto);
END_VAR
VAR
  ThAutoSwi              : FB_BA_Swi2P;
  PrioSwi                : FB_BA_SunBldTgmSel8;
  EnSunBldSwi            : SR;
END_VAR