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

Syntax

FUNCTION_BLOCK FB_BA_Trend EXTENDS FB_BA_EventObject IMPLEMENTS I_BA_Trend
VAR_INPUT
  bTrigPgm                  : BOOL;
END_VAR
VAR_OUTPUT
  nRecordCount              : UDINT;
  nTotalRecordCount         : UDINT;
END_VAR
VAR_INPUT CONSTANT PERSISTENT
  {region 'Fixed Parameters'}
    {attribute 'parameterCategory':='Value'}
    nBufferSize             : UDINT := XBA_Param.nTrend_BufferSize;
  {endregion}
  {region 'Variable Parameters'}
    {attribute 'parameterCategory':='Value'}
    aLogBuffer              : ARRAY [1 .. 1] OF ST_BA_TrendEntry
    {attribute 'parameterCategory':='State'}
    bEnable                 : BOOL;

    {attribute 'parameterCategory':='Config'}
    stStartTime             : ST_BA_DateTime := XBA_Param.stTrend_DefStartTime;
    {attribute 'parameterCategory':='Config'}
    stStopTime              : ST_BA_DateTime := XBA_Param.stTrend_DefStopTime;
    {attribute 'parameterCategory':='Config'}
    bStopOnFull             : BOOL := XBA_Param.bTrend_DefStopOnFull;
    {attribute 'parameterCategory':='Config'}
    {attribute 'parameterUnit':= 's'}
    nLogInterval            : UDINT := XBA_Param.nTrend_DefLogInterval;
    {attribute 'parameterCategory':='Config'}
    nNotificationThreshold  : UDINT := XBA_Param.nTrend_DefNotificationThreshold;
    {attribute 'parameterCategory':='Config'}
    eLoggingType            : E_BA_LoggingType := XBA_Param.eTrend_DefLoggingType;
    {attribute 'parameterCategory':='Config'}
    stReferencedParam       : ST_BA_ObjectParameter;
  {endregion}
END_VAR

Inputs

Name	Type	Description
bTrigPgm	BOOL	Trigger to start trending.

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