FB_BA_ThiesWSC11

Function block for cyclic reading and processing of serial data from a Thies WSC11 weather station.

This function block converts the serial data into a defined structure.

Syntax

VAR_INPUT
  bRst                 : BOOL;
END_VAR
VAR_INPUT CONSTANT PERSISTENT
  nUpdateTime          : UDINT;
  nConfigTimeout       : UDINT;
  nMaxCyclesOldData    : UDINT;
  nWndDatAvrgIntVal    : UDINT;
  bWndSpdLEDOn         : BOOL;
  bTwiLgtCalcAvrg      : BOOL;
  nWndDirNorthOffs     : UDINT;
  nStHgtAMSL           : UDINT;
  nRainOffDly          : UDINT;
  nDistMsgDly          : UDINT;
END_VAR
VAR_OUTPUT
  stWSC11Data          : ST_BA_WSC11Data;
  bErr                 : BOOL;
  sErrDescr            : T_MaxString;
END_VAR
VAR_IN_OUT
  TXBuffer             : ComBuffer;
  RXBuffer             : ComBuffer;
END_VAR

Inputs

Name	Type	Description
bRst	BOOL	A rising edge at this input triggers a software reset within the weather station.

Inputs CONSTANT PERSISTENT

Name	Type	Description
nUpdateTime	UDINT	Data retrieval interval [500…60000 ms].
nConfigTimeout	UDINT	Timeout for the configuration routine [s].
nMaxCyclesOldData	UDINT	Maximum number of read cycles with identical data: beyond this, it is considered an error - possibly caused by wire break.
nWndDatAvrgIntVal	UDINT	Averaging interval of wind direction and wind speed [1…10 min], 0 = off.
bWndSpdLEDOn	BOOL	A TRUE indicates the event "Wind" via the blue LED on the weather station.
bTwiLgtCalcAvrg	BOOL	Selection of the value calculation for twilight: FALSE: the sum of the 4 light sensors is used. TRUE: the average value of the 4 light sensors is used.
nWndDirNorthOffs	UDINT	Offset for wind direction [0...360°]. This can be used to correct the north direction.
nStHgtAMSL	UDINT	Station height above sea level [0...3000 m].
nRainOffDly	UDINT	Release delay of rain detection [0…3600 s].
nDistMsgDly	UDINT	Delay of error messages [0...60 s].

Outputs

Name	Type	Description
stWSC11Data	ST_BA_WSC11Data	Output of the data
bErr	BOOL	Error
sErrDescr	T_MaxString	Textual error description

Inputs/outputs

Name	Type	Description
TXBuffer / RXBuffer	ComBuffer	Serial data exchange with the reading function block SerialLineControl in the fast task.

Requirements

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