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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

能不能具體一點呢
譬如 Lcpu WindowsXP 32 以太網口...

vb可以用MX ComponentV4，里面的控件編寫比較容易，不用了解通訊協議，軟件里有例程。

論壇上已經有大師發表過的，找找

新項目用vb的應該屬于比較奇葩的。不過vb確實挺好用的。

求教 假如我用FX3U-ENET-ADP 與VB連接呢 ，可否做一個簡單一點的程序給我們看看（強調簡單一點不然對初學者來說看不懂）望各位前輩賜教，感激不盡

為什么不用LABVIEW呢？新手用VB估計要寫死人。。。

引用

引用第7樓liuqiang2012于2016-04-25 10:40發表的  :
為什么不用LABVIEW呢？新手用VB估計要寫死人。。。

LABVIEW可以做一個程序看看不

    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

引用

引用第9樓shuangyu于2016-04-25 15:05發表的  :
    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
.......

你這行代碼是以太網的嗎

是的，適用于FX3U-ENET-ADP 模塊；其他端口可能設置參數不一樣