Lavadora web 2.0. Interface HMI en Vb.net

Imports TwinCAT.Ads
Public Class ClassAds
    Private adsClient As TcAdsClient
    Dim Conectado As AdsState
    Enum AdsState
        Desconectado
        ErrorConect
        ConectadoOk
    End Enum
 
#Region "PLC ADS"
    Public Function Conectar() As String
        Try
            adsClient = New TcAdsClient
            adsClient.Connect("192.168.255.2.1.1", 801)
            adsClient.Timeout = 5000
 
            If adsClient.ReadState.AdsState.ToString = "Run" Then
                Conectado = AdsState.ConectadoOk
            Else
                Conectado = AdsState.ErrorConect
            End If
            Return adsClient.ReadState.AdsState.ToString
        Catch err As Exception
            Conectado = AdsState.ErrorConect
            Return "Error"
        End Try
 
    End Function
 
    Public Function ValorIntPorNombre(ByVal Name As String)
 
        Dim dataStream As AdsStream
        Dim Read As AdsBinaryReader
 
        Try
            'Recuperar Numero Var
            Dim Var As Integer
            Var = adsClient.CreateVariableHandle(Name)
 
            dataStream = New AdsStream(2)
            adsClient.Read(Var, dataStream)
            Read = New AdsBinaryReader(dataStream)
            Return Read.ReadInt16
        Catch err As Exception
 
            Conectado = AdsState.ErrorConect
            Return 0
        End Try
    End Function
    Public Function txtPorNombre(ByVal Name As String)
 
        Dim dataStream As AdsStream
        Dim Read As AdsBinaryReader
        Dim txt As String
        Dim length As Integer
 
        Try
            'Recuperar Numero Var
            Dim Var As Integer
            Var = adsClient.CreateVariableHandle(Name)
 
            dataStream = New AdsStream(31)
            length = adsClient.Read(Var, dataStream)
 
 
            Read = New AdsBinaryReader(dataStream)
            'txt = Read.ReadString
            txt = New String(Read.ReadChars(length))
            'txt = txt.Substring(0, txt.IndexOf("\0"))
            Return txt
        Catch err As Exception
 
            Conectado = AdsState.ErrorConect
            Return 0
        End Try
 
    End Function
    Public Sub EscribirBoolPorNombre(ByVal Name As String, ByVal Valor As Boolean)
 
        Dim dataStream As AdsStream
        Dim Escribir As AdsBinaryWriter
 
        Try
            'Recuperar Numero Var
            Dim Var As Integer
            Var = adsClient.CreateVariableHandle(Name)
            dataStream = New AdsStream(1)
            Escribir = New AdsBinaryWriter(dataStream)
            Escribir.Write(Valor)
 
            adsClient.Write(Var, dataStream)
        Catch err As Exception
            Conectado = AdsState.ErrorConect
        End Try
    End Sub
 
    Public Sub Desconectar()
        If Conectado = AdsState.ConectadoOk Then adsClient.Dispose()
        Conectado = AdsState.Desconectado
    End Sub
    Public Function StateAds() As String
        If Conectado = AdsState.ConectadoOk Then
            Return 1
        Else
            Return 0
        End If
    End Function
#End Region
End Class

Public Class Form1
    Dim Plc1 As New ClassAds
 
 
 
    Private Sub buConectar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buConectar.Click
        Plc1.Conectar()
        Timer1.Enabled = True
    End Sub
 
    Private Sub buDesconectar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buDesconectar.Click
        If Plc1.StateAds = 1 Then Plc1.Desconectar()
 
    End Sub
 
    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Timer1.Enabled = False
 
        If Plc1.StateAds <> 1 Then
            MessageBox.Show("Error Ads")
            Exit Sub
        End If
 
        laTemp.Text = "Temperatura = " & Plc1.ValorIntPorNombre(".Temperatura") & "ºC"
        laNivelAgua.Text = "Nivel de Agua  = " & Plc1.ValorIntPorNombre(".NivelAgua")
        laEstado.Text = Plc1.txtPorNombre("MAIN.txtAviso")
 
        pbM1.Visible = Plc1.ValorIntPorNombre(".M1")
        pbBombo.Visible = pbM1.Visible
        pbM2.Visible = Plc1.ValorIntPorNombre(".M2")
        pbY1.Visible = Plc1.ValorIntPorNombre(".Y1")
        pbY2.Visible = Plc1.ValorIntPorNombre(".Y2")
 
        pbX1.Visible = Plc1.ValorIntPorNombre(".X1")
        ImgFondo(Plc1.ValorIntPorNombre(".CajonCerrado"))
 
        Timer1.Enabled = True
    End Sub
    Private Sub ImgFondo(ByVal Estado As Integer)
        If Estado Then
            pbFondo.ImageLocation = "../../Resources/LavPreparada.png"
        Else
            pbFondo.ImageLocation = "../../Resources/TodoParado.png"
        End If
    End Sub
 
    Private Sub buMarcha_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buMarcha.Click
        If Plc1.StateAds <> 1 Then Exit Sub
        Plc1.EscribirBoolPorNombre(".InicioLavado", True)
    End Sub
 
    Private Sub buCerrarCajon_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buCerrarCajon.Click
        If Plc1.StateAds <> 1 Then Exit Sub
        Plc1.EscribirBoolPorNombre(".CajonCerrado", True)
        Plc1.EscribirBoolPorNombre(".PuertaCerrada", True)
    End Sub
    Private Sub buAbrirCajon_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buAbrirCajon.Click
        If Plc1.StateAds <> 1 Then Exit Sub
        Plc1.EscribirBoolPorNombre(".CajonCerrado", False)
        Plc1.EscribirBoolPorNombre(".PuertaCerrada", False)
    End Sub
    Private Sub Form1_Disposed(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Disposed
        If Plc1.StateAds = 1 Then Plc1.Desconectar()
    End Sub
End Class