ID : 3890

Comm.Count

Function

To return the number of data bytes readable from reception buffer of the data communication function.

Syntax

Comm.Count(line number)

Guaranteed Entry

Line number: Designate a line number by integer type data.

Return Value

Return the number of bytes by integer type data.

Description

The number of data bytes readable from reception buffer of the data communication function is returned.

Attention

Example

'!TITLE "Acquisition of the Number of Data Bytes Readable from Reception Buffer by Data
 Communication Function"
' Acquire the number of data bytes readable from reception buffer of line number 1
Sub Sample_CommCount 

  Dim aaa As Integer
  Dim bbb As String

  ' Open line number 1 (Assuming that the text mode is used)
  Comm.Open 1

  Do
    ' Assign the number of data bytes readable from reception buffer of line number 1 to aaa
    aaa = Comm.Count( 1 )
    If aaa > 0 Then ' Obtain if any received data exists
      bbb = Comm.Input( 1 )
      PrintDbg bbb
      Exit Do
    End If
    Delay 10
  Loop

  ' Close line number 1
  Comm.Close 1

End Sub