FB_BA_SunBldTwiLgtAuto
The function block FB_BA_SunBldTwiLgtAuto controls the blind when the outdoor brightness has fallen below a limit value.
The twilight automatic works with a value and a time hysteresis: If the outdoor brightness value fBrtns [lx] falls below the value fActvVal [lx] for the time nActvDly [s], then the function block is active and will provide the blind positions fPosTwiLgt (height [%]) and fAnglTwiLgt (slat angle [°]) specified at the input variables at the output in the positioning telegram ST_BA_Sunbld. Conversely, if the outdoor brightness exceeds the value fDctvVal[lx] for the time nDctvDly [s], the automatic function is no longer active. The active flag in the positioning telegram ST_BA_Sunbld is reset and the positions for height and angle are set to "0". A function with a lower priority can then take over control.
Inputs
VAR_INPUT
bEn : BOOL;
fBrtns : REAL;
fActvVal : REAL;
fDctvVal : REAL;
nActvDly : UDINT;
nDctvDly : UDINT;
fPosTwiLgt : REAL;
fAnglTwiLgt : REAL;
END_VAR
Name | Type | Description |
|---|---|---|
bEn | BOOL | The function block has no function if this input is FALSE. 0 is output for the position and the angle in the positioning telegram ST_BA_SunBld - bManMod and bActv are set to FALSE. This means that another function takes over control of the blind via the priority controller. Conversely, a direct connection allows the blind to drive directly to the 0 position, i.e. fully up, since the actuator function block does not evaluate the bit bActv itself. |
fBrtns | REAL | Outdoor brightness [lx]. |
fActvVal | REAL | Activation limit value [lx]. The value fActvVal is internally limited to values from 0 to fDctvVal. |
fDctvVal | REAL | Deactivation limit value [lx]. Internally limited to a minimum value of 0. |
nActvDly | UDINT | Activation delay [s]. Internally limited to a minimum value of 0. |
nDctvDly | UDINT | Deactivation delay [s]. Internally limited to a minimum value of 0. |
fPosTwiLgt | REAL | Vertical position of the blind [%] if the twilight automatic is active. Internally limited to values between 0 and 100. |
fAnglTwiLgt | REAL | Lamella angle of the blind [°] if the twilight automatic is active |
Inputs CONSTANT PERSISTENT
VAR_INPUT CONSTANT PERSISTENT
ePrio : E_BA_SunBldPrio := E_BA_SunBldPrio.eGroupTwiLightAuto;
END_VAR
Name | Type | Description |
|---|---|---|
ePrio | E_BA_SunBldPrio | Priority of the active telegram. |
Outputs
VAR_OUTPUT
stSunBld : ST_BA_SunBld;
bActv : BOOL;
nRemTiActv : UDINT;
nRemTiDctv : UDINT;
END_VAR
Name | Type | Description |
|---|---|---|
stSunBld | Output telegram, for the position and angle of the lamella. | |
bActv | BOOL | Corresponds to the boolean value bActv in the blind telegram ST_BA_SunBld and is solely used to indicate whether the function block sends an active telegram. |
nRemTiActv | UDINT | Shows the time remaining [s] after falling below the switch value fActvVal until automatic mode is activated. This output is 0 as long as no countdown of the time is taking place. |
nRemTiDctv | UDINT | Shows the time remaining [s] after exceeding of the switch value fDctvVal until automatic mode is disabled. This output is 0 as long as no countdown of the time is taking place. |
 | If an error occurs, this automatic control is disabled and the position and angle are set to 0. This means that if a priority controller is in use, another function with a lower priority (see Overview) automatically takes over control of the blind. In the case of a direct connection, conversely, the blind will drive to position/angle 0. |
Requirements
Development environment | Required PLC library |
|---|---|
TwinCAT from v3.1.4024.22 | Tc3_BA2 from v5.2.5.0 |