TableName.Output (Data Output to DataTable)

The TableName.Output syntax is used to determine if data was written to a specific DataTable the last time that the DataTable was called.

Syntax

TableName.Output(1,1)

This program example uses the TableName.Output(1,1) syntax to determine if the program has stored data in the DataTable called Main.

Public Heater 
Units Heater = Deg_F  
Public Flag           
Dim TRef               'Declare Reference Temp variable
Public DataOut

DataTable(MAIN,True,-1)                   'Trigger, auto size
  DataInterval(0,50,msec,100)  '50 mSec interval, 100 lapses
  DataEvent(5,Heater>=89,True,10)       'Event Driven Table
  Sample(1,Heater,FP2)
EndTable

BeginProg 
  Scan(50,msec,0,0)  
   
    PanelTemp(TRef,4000)  'RefTemp 
    TCDiff(Heater,1,mv34,1,TypeT,TRef,False,0,4000,1.8,32)
    CDM_PanelTemp (VOLT116,CPI_BusA + 1,TRef,1,1,4000)  
    CDM_TCDiff (VOLT116,CPI_BusA + 1,Heater,1,mv34,1,TypeT,TRef,False,0,4000,1.8,32)

    CallTable MAIN     

    DataOut = Main.output(1,1) 'Set DataOut = the current value returned by the Main.Output instruction.
    If DataOut = 0 Then 'If DataOut = 0 (no output this scan),
      Flag = false   'Set Flag low (no output)
    Else
      Flag = true    'Set Flag high (data is output)
    EndIf

  NextScan                    
EndProg 

Remarks

The name of the DataTable is entered in place of the TableName parameter. TableName is limited to 20 characters. TableName.Output = -1 (true) if data was written to the specified DataTable, and = 0 (false) if data was not written to the DataTable. Note that TableName.Output is set back to false when the table is called and output did not occur.

For additional data table access functionality, see Data Table Access.