FB_BA_Weatherstation_Draft

This template represents a programming template for a weather station for which no prepared template is available. To the objects Dstb ... SunElv the values of the existing weather station are to be linked, if available, as well as the time. There is no object for the time of the type TIMESTRUCT, here the placeholder variable must be replaced. This is only for error-free translation of the base project.

The respective values fPresentValue are combined in a globally declared variable structure stWeatherstation (see Site).

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

Syntax

FUNCTION_BLOCK FB_BA_WeatherStation_Draft EXTENDS FB_BA_View
VAR_INPUT CONSTANT
  Dstb                      : FB_BA_BI;
  Rain                      : FB_BA_BI;
  WthT                      : FB_BA_AI;
  DewPtT                    : FB_BA_AI;
  PrssAbs                   : FB_BA_AI;
  PrssRel                   : FB_BA_AI;
  HumAbs                    : FB_BA_AI;
  HumRel                    : FB_BA_AI;
  Brightness                : FB_BA_AI;
  Dawn                      : FB_BA_AI;
  GlobRadn                  : FB_BA_AI;
  WndDir                    : FB_BA_AI;
  WndSpd                    : FB_BA_AI;
  Latd                      : FB_BA_AI;
  Lngt                      : FB_BA_AI;
  SunAzm                    : FB_BA_AI;
  SunElv                    : FB_BA_AI;
END_VAR

VAR
  stDateTime_PLACEHOLDER    : TIMESTRUCT;
END_VAR

Inputs CONSTANT

Name	Type	Description
Dstb	FB_BA_BI	The weather station reports a malfunction.
Rain	FB_BA_BI	Rain sensor.
WthT	FB_BA_AI	Outside temperature [°C].
DewPtT	FB_BA_AI	Dew point temperature [°C].
PrssAbs	FB_BA_AI	Absolute air pressure [hPa].
PrssRel	FB_BA_AI	Relative air pressure [hPa].
HumAbs	FB_BA_AI	Absolute humidity [g/m³].
HumRel	FB_BA_AI	Relative Absolute Humidity [g/m³].
Brightness_N	FB_BA_AI	Directional light sensor north [Lux].
Brightness_S	FB_BA_AI	Directional light sensor south [Lux].
Brightness_E	FB_BA_AI	Directional light sensor east [Lux].
Brightness_W	FB_BA_AI	Directional light sensor west [Lux].
Dawn	FB_BA_AI	Dawn [Lux].
GlobRadn	FB_BA_AI	Global radiation [W/m²].
WndDir	FB_BA_AI	Wind direction [°].
WndSpd	FB_BA_AI	Wind speed [m/s]
Latd	FB_BA_AI	Latitude of the installation site [°].
Lngt	FB_BA_AI	Longitude of the installation site [°].
SunAzm	FB_BA_AI	Current position of the sun [°].
SunElv	FB_BA_AI	Current sun elevation [°].

Variables

Name	Type	Description
stDateTime_PLACEHOLDER	TIMESTRUCT	Placeholder variable: instead of this variable, a suitable time structure can be linked, which provides the current time via the weather station.

Requirements

Development environment	Necessary function
TwinCAT from v3.1.4024.35	TF8040 \| TwinCAT Building Automation from V5.0.0.0