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小弟最近做做一個項目，要求用vb做為上位機與plc通信，本人以前只用過HMI,對VB不太孰悉，各位大蝦vb與plc如何通信呢．有沒有實例程序供小弟參考下．謝謝

    Function NewPLCFXENTE(ByVal PortNum As String) As Object
        Try
            Dim PLCFX As New ActProgTypeLib.ActProgType
            Dim PLCType As Integer = 520
            Dim PLCUnitType As Integer = 74
            Dim PLCUnitNumber As Integer = 0
            Dim PLCPrgType As Integer = 5
            Dim PLCHostAddress As String = ""
            Dim PLCTimeOut = 500


            With PLCFX
                .ActCpuType = PLCType
                .ActUnitType = PLCUnitType
                .ActUnitNumber = PLCUnitNumber
                .ActProtocolType = PLCPrgType
                ' .ActHostAddress = "192.168.1." & PortNum
                .ActHostAddress = PortNum
                .ActTimeOut = PLCTimeOut
            End With

            Return PLCFX
        Catch ex As Exception
            MsgBox(ex.Message)
            MLog.LogErrWrite(ex.ToString)
        End Try

    End Function

  PLC0 = PLCM.NewPLCFXENTE(IPAddress(0))
            PLCConErr(0) = PLC0.Open

是的，適用于FX3U-ENET-ADP 模塊；其他端口可能設置參數不一樣

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