COM open/close problem

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  • Bill
    #1

    COM open/close problem

    the following code works most of the time, but sometimes it fails.
    Anyone got an idea? It will pass the IF statement (port is open) but
    fail to set the port closed.

    If MSComm1.PortOpe n Then
    MSComm1.PortOpe n = False
    End If

    It also fails in the other direction.

    If Not MSComm1.PortOpe n Then
    MSComm1.PortOpe n = True
    End If
    Tags: None
    • CajunCoiler \(http://www.cajuncoiler.tk\)
      #2
      Re: COM open/close problem

      Have you checked to assure that the .CommPort value hasn't
      been accidentally changed? If it has, you're closing the
      wrong port. :)

      "Bill" <wishonb@hotmai l.com> wrote in message
      news:eeb04a33.0 307091310.454a6 892@posting.goo gle.com...[color=blue]
      > the following code works most of the time, but sometimes it fails.
      > Anyone got an idea? It will pass the IF statement (port is open) but
      > fail to set the port closed.
      >
      > If MSComm1.PortOpe n Then
      > MSComm1.PortOpe n = False
      > End If
      >
      > It also fails in the other direction.
      >
      > If Not MSComm1.PortOpe n Then
      > MSComm1.PortOpe n = True
      > End If[/color]


        Comment

        • Bill
          #3
          Re: COM open/close problem

          I'm not sure how the .CommPort could change between the IF statement
          and the assignment statement. In addition, when it fails, I can hover
          over the variable and it tells me that the port is open (in the first
          case) or closed (2nd case), so the assignment statement should work,
          but still fails.

          If my memory is correct, I have even set the program back to the IF
          statement and reexecuted the lines and it still passes the IF
          statement but still fails the assignment statement.

          "CajunCoile r \(http://www.cajuncoiler .tk\)" <cajuncoiler@to tallyspamless.c ox.net> wrote in message news:<V8fPa.553 $N%3.372@lakere ad01>...[color=blue]
          > Have you checked to assure that the .CommPort value hasn't
          > been accidentally changed? If it has, you're closing the
          > wrong port. :)
          >
          > "Bill" <wishonb@hotmai l.com> wrote in message
          > news:eeb04a33.0 307091310.454a6 892@posting.goo gle.com...[color=green]
          > > the following code works most of the time, but sometimes it fails.
          > > Anyone got an idea? It will pass the IF statement (port is open) but
          > > fail to set the port closed.
          > >
          > > If MSComm1.PortOpe n Then
          > > MSComm1.PortOpe n = False
          > > End If
          > >
          > > It also fails in the other direction.
          > >
          > > If Not MSComm1.PortOpe n Then
          > > MSComm1.PortOpe n = True
          > > End If[/color][/color]

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