FB_BA_Trend

The function block FB_BA_Trend represents a trend within the project structure of TF8040.

Information about inherited elements

FB_BA_Base

FB_BA_BasePublisher

Illustration

FUNCTION_BLOCK FB_BA_Trend EXTENDS FB_BA_EventObject IMPLEMENTS I_BA_Trend
VAR_OUTPUT
  nRecordCount                : UDINT;
  nTotalRecordCount           : UDINT;
END_VAR
VAR_INPUT CONSTANT PERSISTENT
  {region 'Fixed Parameters'}
    nBufferSize               : UDINT := BA_Param.nTrend_BufferSize;
  {endregion}
  {region 'Variable Parameters'}
    aLogBuffer                : T_BA_TrendLogBuffer;
    bEnable                   : BOOL;
    stStartTime               : ST_BA_DateTime := BA_Param.stTrend_DefStartTime;
    stStopTime                : ST_BA_DateTime := BA_Param.stTrend_DefStopTime;
    bStopOnFull               : BOOL := BA_Param.bTrend_DefStopOnFull;
    nLogInterval              : UDINT := BA_Param.nTrend_DefLogInterval;
    nNotificationThreshold    : UDINT := BA_Param.nTrend_DefNotificationThreshold;
    eLoggingType              : E_BA_LoggingType := BA_Param.eTrend_DefLoggingType;
    stReferencedParam         : ST_BA_ObjectParameter;
  {endregion}
END_VAR

VAR_OUTPUT

Name	Type	Description
nRecordCount	UDINT	Number of records.
nTotalRecordCount	UDINT	Absolute number of records.

VAR_INPUT CONSTANT PERSISTENT

Name	Type	Description
nBufferSize	UDINT	Size of the buffer.
aLogBuffer	ST_BA_TrendEntry	Ring buffer for values with timestamp.
bEnable	BOOL	Recording enable.
stStartTime	ST_BA_DateTime	Start time.
stStopTime	ST_BA_DateTime	Stopping time.
bStopOnFull	BOOL	A TRUE stops the recording when the buffer is full.
nLogInterval	UDINT	Interval for saving the parameters.
nNotificationThreshold	UDINT	Limit value at which notifications are triggered.
eLoggingType	E_BA_LoggingType	Setting the type of saving.
stReferencedParam	ST_BA_ObjectParameter	Parameter object.

Requirements

Development environment	Required PLC library
TwinCAT from v3.1.4024.35	Tc3_XBA from v5.3.0.0