Imports System.Collections.Generic
Imports System.Collections.ObjectModel
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Linq
Imports System.Text
Imports System.Windows.Forms
Imports System.Runtime.InteropServices
Imports EgtUILib

Namespace Num
    Public Class NumNCOld
        Inherits CN_generico

#Region " Classes"
#End Region

#Region " Enum"
      Enum eStatetype As Int16
         NOT_INIT = -999
         READY = 0
         BUSY = -998
      End Enum
#End Region

#Region " Constants"

      Const SLEEP_TIME = 1

      Const A_AXIS As Short = 6
      Const RET_OK As Int16 = 0

      ' modi NUM Axium

      Const AUTO_M = 0, SINGLE_M = 1, MDI_M = 2, DRYRUN_M = 3, SEARCH_M = 4, EDIT_M = 5, TEST_M = 6
      Const MANUAL_M = 7, MOS_M = 8, SHIFTS_M = 9, TLCOMP_M = 10, LOAD_M = 13, UPLOAD_M = 15

      Const V0 = &HA000, V1 = &HA001, V2 = &HA002, V3 = &HA003, V4 = &HA004, V5 = &HA005, V6 = &HA006, V7 = &HA007
      Const VBY = &HA040, VW = &HA041, VL = &HA042   'VB4 doesn't accepte VB (-->VBY )

      Const M0 = &HA100, M1 = &HA101, M2 = &HA102, M3 = &HA103, M4 = &HA104, M5 = &HA105, M6 = &HA106, M7 = &HA107
      Const MB = &HA140, MW = &HA141, ML = &HA142

      'Global Const C0=*0xA200
      'C1,C2,C3,C4,C5,C6,C7,
      Const CB = &HA240, CW = &HA241, CL = &HA242

      Const R0 = &HA400, R1 = &HA401, R2 = &HA402, R3 = &HA403, R4 = &HA404, R5 = &HA405, R6 = &HA406, R7 = &HA407
      Const RB = &HA440, RW = &HA441, RL = &HA442

      Const W0 = &HA500, W1 = &HA501, W2 = &HA502, W3 = &HA503, W4 = &HA504, W5 = &HA505, W6 = &HA506, W7 = &HA507
      Const WB = &HA540, WW = &HA541, WL = &HA542

      Const I0 = &HA800, I1 = &HA801, I2 = &HA802, I3 = &HA803, I4 = &HA804, I5 = &HA805, I6 = &HA806, I7 = &HA807
      Const IB = &HA840, IW = &HA841, IL = &HA842

      Const Q0 = &HA900, Q1 = &HA901, Q2 = &HA902, Q3 = &HA903, Q4 = &HA904, Q5 = &HA905, Q6 = &HA906, Q7 = &HA907
      Const QB = &HA940, QW = &HA941, QL = &HA942

      Const SYN = 0 ' /* synchrone */
      Const ASS = 1 ' /* assynchrone send request */
      Const ASR = 2 ' /* assynchrone read response */

      Const CTRL_AXES = 143
      Const SPINDLE_SPEED = 144
      Const SPINDLE_POS = 145, H_VAR = 147, MOS_OK = 149
      Const E80000 = 150, E81000 = 151, E82000 = 152, E30000 = 166, E40000 = 167, M_DECOD = 168, DATA_PROG = 226

      Const Mode = 180, ACTIVE_PROG = 181

      Const REF = 128, MES = 129, DAT1 = 130, DAT2 = 131, DAT3 = 132, MIN_LIM = 133, MAX_LIM = 134, VARH = 147
      Const TILT = 135, MACH_ORIGIN = 136, P17_MIN = 137, P17_MAX = 138, REF_COR = 139, REF_POS = 140, MES_POS = 141

      Const TMACRO1 = &H31, TMACRO2 = &H32, TMACRO3 = &H33
      Const TUT6 = 6, TLAD = 7, TIHM = 8, TNC = 12, TPAR = 5, TCALIBR = 2, TMACRO = 11, TUTIL = 13, TPASSANT = 12
      Const TSi = 1, TFi = 2, SPi = 3, THi = 4, INI = 5, TABSYMB = 10, ALLMODULE = 16, CMODULE = 65, TXTFILE = 97
      Const IHMFNT = 98, IHMBMP = 99, IHMRSC = 100, IHMINI = 101, IHMTXT = 102, IHMICO = 103, IHMCOD = 104

#End Region

#Region " Structures"

      Structure tDNC20_Position_OPOM
         Dim Valid As Byte
         Dim Position As Long
         Dim ToGo As Long
         Dim offset As Long
      End Structure

      Structure tDNC20_Axes
         '            Dim axe(0 To 8) As tDNC20_Position_OPOM
         Dim axe() As tDNC20_Position_OPOM
      End Structure

      Structure tDNC20_Spindle_i
         Dim Valid As Byte
         Dim Spindle As Long
      End Structure

      Structure tDNC20_Spindle
         ' Dim Data(0 To 3) As tDNC20_Spindle_i
         Dim Data() As tDNC20_Spindle_i
      End Structure

      Structure tCorOutil
         Dim L_X As Long
         Dim RTore_Z As Long
         Dim R_Radus As Long
         Dim DL_DX As Long
         Dim DR_DZ As Long
         Dim Direc As Long
         Dim Type As Long
      End Structure


      Public Structure My_data_struct
         <MarshalAs(UnmanagedType.ByValArray, SizeConst:=256)> _
         Public data As Byte()
      End Structure

#End Region

#Region " Variabili "

      Public Var600A As Byte
      Public Var600B As Byte
      Public Var600C As Byte
      Public Var600D As Byte
      Public Var600E As Byte
      Public Var600F As Byte

      Public var6010L As Long
      Public var6014L As Long
      Public var6018L As Long
      Public var601CL As Long
      Public var6020L As Long
      Public var6024L As Long
      Public var6028L As Long
      Public var602CL As Long


      Private iFirstVar As UInt16
      Private n_portNC As Int16

      Private Vmminch As Long = 1000
      Private NumCifreDecP4 As Long = 1000

      Private aTimer As System.Timers.Timer

      Private b_busy As Boolean = False
      Private b_OM_pos As Boolean = True
      Private global_state As eStatetype = eStatetype.NOT_INIT

      Private MyData As My_data_struct
      Private MyData2 As My_data_struct

      Private l_active_program As Long ' /* active CNC program number */
      Private l_GFunction As Long ' /* G functions running */

      Private n_BlocExe As UInt16 ' ; /* current block number */
      Private n_ProgError As Int16 ' ; /* CNC error number detected */
      Private n_BlocError As UInt16 ' ; /* block number where the error was detected */
      Private n_Tool As UInt16 ' ; /* current tool number (T) */
      Private n_Direction As UInt16 ' ; /* current tool direction */
      Private n_Corrector As UInt16 ' ; /* current tool offset number (D) */
      Private n_LeftFunct As UInt16 ' ; /* functions to be executed after current movement (see LADDER documentation) */

      Private n_ErrorNumber As UInt16     ' //Error number
      Private n_ErrorBlockNum As UInt16   '   //Block number in error
      Private n_ReadStatus As UInt16      '           //Read Status: 0x0F=end of message 0x06=follow-up
      Private n_MsgSize As UInt16         '                 //Number of  characters in the message
      Private MsgTab(123) As Byte         ' //Message read


#End Region

#Region " DLL import"

      Declare Function SetPLCTool Lib "LIB_UNIT2.DLL" (ByVal chinit As String) As Int16
      Declare Function Get_Port Lib "LIB_UNIT2.DLL" (ByRef Port As Int16) As Int16

      Declare Function Free_Port Lib "LIB_UNIT2.DLL" (ByVal Port As Int16) As Int16
      Declare Function Close_Unite Lib "LIB_UNIT2.DLL" () As Int16

      Declare Function WriteObjectVarious2 Lib "dnc2.DLL" (ByVal Port As Int16, ByVal qui As UInt16, ByRef pData As Int32) As Int16
      Declare Function ReadObjectVarious2 Lib "dnc2.DLL" (ByVal Port As Int16, ByVal qui As UInt16, ByRef pData As Int32, ByVal Mode As UInt16) As Int16
      '        Declare Function WriteLadderVar Lib "dnc2.DLL" (ByVal Port As Int16, ByVal qui As UInt16, ByVal num As Int16, ByVal Nb As Int16, ByRef pData As Int32) As Int16

      Declare Function StartNC Lib "dnc2.dll" (ByVal Port As Int16) As Int16
      Declare Function StopNC Lib "dnc2.dll" (ByVal Port As Int16) As Int16
      Declare Function InitNC Lib "dnc2.dll" (ByVal Port As Int16) As Int16

      Declare Function WriteTool Lib "dnc2.dll" (ByVal Port As Int16, ByVal number As Integer, ByVal Quantity As Integer, AdrData As tCorOutil) As Int16
      Declare Function ReadTool Lib "dnc2.dll" (ByVal Port As Int16, ByVal number As Integer, ByVal Quantity As Integer, ByRef d As My_data_struct, ByVal Mode As UInt16) As Int16

      Declare Function DNC20_DialWithModes_2 Lib "dnc20_2.dll" (ByVal Port As Int16, ByVal pstring As String, ByVal Mode As UInt16) As Int16
      Declare Function DNC20_Spindle Lib "dnc20_2.dll" (ByVal Port As Int16, ByVal Group As Int16, ByRef pData As tDNC20_Spindle, ByVal Mode As UInt16) As Int16

      Declare Function ReadLadderVar Lib "dnc2.DLL" (ByVal Port As Int16, ByVal qui As UInt16, ByVal num As UInt16, ByVal Nb As UInt16, ByRef d As My_data_struct, ByVal Mode As UInt16) As Int16

      Declare Function UpLoadFile Lib "dnc2.dll" (ByVal Port As Int16, ByVal prog As Int32, ByVal filename As String) As Int16
      Declare Function DownLoadFile Lib "dnc2.dll" (ByVal Port As Int16, ByVal prog As Int32, ByVal filename As String) As Int16
      Declare Function DncDeleteFile Lib "dnc2.dll" (ByVal Port As Int16, ByVal prog As Int32) As Int16

      Declare Function DNC20_Position_OM Lib "dnc20_2.dll" (ByVal Port As Int16, ByVal Groupe As Int16, ByRef d As My_data_struct, ByVal Mode As UInt16) As Int16
      Declare Function DNC20_Position_OP Lib "dnc20_2.dll" (ByVal Port As Int16, ByVal Groupe As Int16, ByRef d As My_data_struct, ByVal Mode As UInt16) As Int16

      Declare Function ReadObjectVarious4 Lib "dnc2.dll" (ByVal Port As Int16, ByVal qui As UInt16, ByVal Prem As UInt16, ByVal Quantity As UInt16, ByRef d As My_data_struct, ByVal Mode As UInt16) As Int16
      Declare Function WriteObjectVarious4 Lib "dnc2.dll" (ByVal Port As Int16, ByVal qui As UInt16, ByVal Prem As UInt16, ByVal Quantity As UInt16, ByRef d As My_data_struct) As Int16

      Declare Function ReadMemoryFree Lib "dnc2.dll" (ByVal port As Int16, ByRef pData As Long, ByVal zone As Int16) As Int16

      Declare Function ReadProgStatus Lib "dnc2.dll" (ByVal port As Int16, ByVal PremGr As Int16, ByVal NbGr As Int16, ByRef d As My_data_struct, ByVal Mode As Int16) As Int16

      Declare Function DNC40_ReadCncError Lib "dnc40_2.dll" (ByVal Port As Int16, ByVal Group As UInt16, ByVal ErrorLineNum As Int16, ByRef d As My_data_struct, ByVal Mode As Int16) As Int16

      Declare Function InterpoState Lib "dnc2.dll" (ByVal port As Int16, ByVal Group As Int16, ByVal GroupNB As Int16, ByRef d As My_data_struct, ByVal Mode As Int16) As Int16

#End Region

#Region " Constructor"

   Sub New()
      n_state = 0
      sz_NC_error_messages = New ObservableCollection(Of String)
   End Sub

   Public Overrides Function Init() As Boolean

      n_state = 0

      ' !!!!!!!!!!!!!!!!!!!!!!!!!1 da leggere da file di configurazione !!!!!!!
      'nret = NC_connect("COM")
      Dim nret As Integer = NC_connect("XIP01, 0, 10, 0, 0, 0")

      n_state = 2

      ' Create a timer and set an half second interval.
      aTimer = New System.Timers.Timer()

      aTimer.Interval = 500 '    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

      ' Hook up the Elapsed event for the timer.  
      AddHandler aTimer.Elapsed, AddressOf OnTimedEvent

      aTimer.AutoReset = True         ' Have the timer fire repeated events (true is the default)

      aTimer.Enabled = True          ' Start the timer

      Return n_state >= 2
   End Function

      Private Sub OnTimedEvent(source As Object, e As System.Timers.ElapsedEventArgs)

         If Not b_busy Then
            aTimer.Enabled = False
            b_busy = True

            Call timer_read_var() ' leggo un mucchio di variabili in un colpo solo

            Call Read_machine_pos() ' leggo posizioni assi

            Call get_errors() ' leggo eventueli errori PLC e CN

            b_busy = False
            aTimer.Enabled = True
         End If

      End Sub

      Function NC_connect(sz_connect_string As String)

         Dim nret As Integer
         Dim msga As String

         'nret = SetPLCTool("XIP01, 0, 10, 0, 0, 0")
         'nret = SetPLCTool("COM")

         nret = SetPLCTool(sz_connect_string)

         If nret <> 0 Then
            msga = "Communication not available (SetPLCTool) : " & nret.ToString & " - " & sz_connect_string
            EgtOutLog(msga)
         End If

         'Richiedo porta comunicazione PC-CN 2
         '           iport2 = 1
         nret = Get_Port(n_portNC)
         If nret <> 0 Then
            msga = " Port not available (Get_Port) : " & nret.ToString
            EgtOutLog(msga)
         End If

         ' eventualmente aggiungere apertura porta per PPP
         'iport3 = 3
         'nret = Get_Port(iport3)

         global_state = eStatetype.READY

         Return nret

      End Function

      Function NC_disconnect()

         Dim nret As Integer


         nret = Free_Port(n_portNC)

         'nret = Close_Unite()

         ' eventualmente pchidere porta per PPP
         ' Free_Port(iport3) 

         Return nret

      End Function

#End Region

      Function timer_read_var()


         Const FIRST_GROUP As Int16 = 0, N_GROUPS As Int16 = 1

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         'lettura variabili da %V600A.B a %V600D.B tramite un solo accesso in memoria per %V600A.B e lettura di 4 in serie

         iFirstVar = &H600A

         nret = ReadLadderVar(n_portNC, VBY, iFirstVar, 5, MyData, SYN)

         If nret = 0 Then
            Var600A = MyData.data(0)        ' Feed_override
            Var600B = MyData.data(1)        ' spindle_override
            Var600C = MyData.data(2)
            Var600D = MyData.data(3)        ' active_mode
            Var600E = MyData.data(4)

            b_feed_changed = True
            d_DInterpo_Feed_override = Math.Round(Var600A * 120.0 / 255, 0)

            b_spindle_data_changed = True
            n_spindle_override(0) = Math.Round((Var600B * 50 / 255) + 50)

         End If

         'Fine lettura %V600D.B

         ' lettura variabile assorbimento mandrino ( %V250F )

         iFirstVar = &H250F

         nret = ReadLadderVar(n_portNC, VW, iFirstVar, 1, MyData, SYN)

         If nret = 0 Then

            d_spindle_power = CDbl(BitConverter.ToInt16(MyData.data, 0)) / 10.0

         End If

            ' lettura potenziometro F override......

         '     Type tInterpo
         '         FeedMes1 As Integer ';  /* not used */
         '         FeedMes2 As Integer ';  /* internal unit per NC sampling time */
         '         Distance As Long ';  /* to go on the path */
         '         FeedProg  As Long ';
         '         Override  As Long ';  /* 16 LSB used */
         '     End Type

         nret = InterpoState(n_portNC, FIRST_GROUP, N_GROUPS, MyData, SYN)

         '         FeedMes1 = BitConverter.ToInt16(MyData.data, 0))
         '         FeedMes2 = BitConverter.ToInt16(MyData.data, 2))  '/* internal unit per NC sampling time */
         '         Distance = BitConverter.ToInt32(MyData.data, 4))  '/* to go on the path */
         '         FeedProg = BitConverter.ToInt32(MyData.data, 8))  
         '         Override = BitConverter.ToInt32(MyData.data, 12))  /* 16 LSB used */

         'e non gestiamo il caso del numero negativo.......
         d_DInterpo_Prog_Feed = CDbl(BitConverter.ToUInt16(MyData.data, 10)) ' sembrerebbero i due bytes più alti del long ...??   

         'lettura variabile S effettiva

         iFirstVar = &H2600

         nret = ReadLadderVar(n_portNC, VL, iFirstVar, 1, MyData, SYN)

         If nret = 0 Then
            d_spindle_eff(0) = CDbl(BitConverter.ToInt32(MyData.data, 0))  ' progr. Feed
         End If

         'lettura variabili da %V6010.L a %V601C.L

         iFirstVar = &H6010

         nret = ReadLadderVar(n_portNC, VL, iFirstVar, 4, MyData, SYN)

         If nret = 0 Then
            var6010L = BitConverter.ToInt32(MyData.data, 0)  ' progr. Feed
            var6014L = BitConverter.ToInt32(MyData.data, 4)  ' progr. speed
            var6018L = BitConverter.ToInt32(MyData.data, 8)
            var601CL = BitConverter.ToInt32(MyData.data, 12)
         End If

         '         d_DInterpo_Prog_Feed = CDbl(var6010L)  ' sembrerebbe non buona letta da qua ...
         d_spindle_prog(0) = CDbl(var6014L)


         'lettura variabili da %V6020.L a %V602C.L

         iFirstVar = &H6020

         nret = ReadLadderVar(n_portNC, VL, iFirstVar, 4, MyData, SYN)

         If nret = 0 Then
            var6020L = BitConverter.ToInt32(MyData.data, 0)
            var6024L = BitConverter.ToInt32(MyData.data, 4) ' potenziometro tablet
            var6028L = BitConverter.ToInt32(MyData.data, 8) ' disponibile
            var602CL = BitConverter.ToInt32(MyData.data, 12) ' disponibile
         End If

         global_state = eStatetype.READY
         Return nret

      End Function

      Private Function set_NC_mode(n_mode As Integer) As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = WriteObjectVarious2(n_portNC, Mode, n_mode)  '     0 AUTO    1 SEQUENZIALE    2 IMD    7 MANUALE   

         global_state = eStatetype.READY

         Return nret

      End Function

        Private Function set_MDI_command(sz_command As String) As Int16

            Dim nret As Int16 = -1
            Dim nret2 As Int16 = -1
            Dim nret3 As Int16 = -1

            If global_state <> eStatetype.READY Then
                Return global_state
                Exit Function
            Else
                global_state = eStatetype.BUSY
            End If

            nret = WriteObjectVarious2(n_portNC, Mode, MDI_M)    ' SELEZIONE MODO IMD
            If nret = 0 Then

                nret2 = DNC20_DialWithModes_2(n_portNC, sz_command, SYN)                  ' PASSO IL COMANDO  SU UN BUFFER 
                If nret2 = 0 Then

                    nret3 = StartNC(n_portNC)                                             ' DO IL CICLO
                    If nret3 = 0 Then

                        nret = WriteObjectVarious2(n_portNC, Mode, MANUAL_M) '            ' SELEZIONO MODO MANUALE

                    Else
                        nret = nret3 + 3000   ' codice di errore della StartNC
                    End If ' If nret3 = 0
                Else
                    nret = nret2 + 2000 ' codice di errore della DNC20_DialWithModes_2
                End If ' If nret2 = 0
            End If ' If nret = 0

            global_state = eStatetype.READY
            Return nret

        End Function

        Function Read_machine_pos()

            Dim nret As Int16
            Dim i As Short, n As Short

            If global_state <> eStatetype.READY Then
                Return global_state
                Exit Function
            Else
                global_state = eStatetype.BUSY
            End If

            If (b_OM_pos) Then               ' quote rispetto a 0  Macchina
                nret = DNC20_Position_OM(n_portNC, 0, MyData, SYN)

            Else                ' quote rispetto A 0 Pezzo
                nret = DNC20_Position_OP(n_portNC, 0, MyData, SYN)
            End If

            For i = 0 To MAX_AXES - 2   ' la costante è 10 per cui per fare da 0 a 8....

                n = i * 16

                b_axis_valid(i) = (MyData.data(n) <> 0)

                If (i < A_AXIS) Then
                    d_axis_position(i) = (BitConverter.ToInt32(MyData.data, n + 4)) / Vmminch  ' X
                    d_axis_delta(i) = (BitConverter.ToInt32(MyData.data, n + 8)) / Vmminch
                Else
                    d_axis_position(i) = (BitConverter.ToInt32(MyData.data, n + 4)) / NumCifreDecP4 ' A
                    d_axis_delta(i) = (BitConverter.ToInt32(MyData.data, n + 8)) / NumCifreDecP4
                End If

            Next

            If b_axis_events_enable Then

                MyBase.OnNewPositionData()
                MyBase.OnNewPosDeltaData()
            End If

            global_state = eStatetype.READY
            Return nret

        End Function

#Region " Metodi pubblici"

        Public Overrides Sub ReadEls_Add_Parameter(sz_var As String, n_par As Short)

        End Sub
        '
        ' call DVariables_WriteVariables("E80000;E80001" , "1;2" )
        '
        Public Overrides Sub DVariables_WriteVariables(sz_parameters As String, sz_values As String)


        End Sub

        Public Overrides Sub DVariables_WriteVariables2(sz_parameters As String, sz_values As String)


        End Sub

      Public Overrides Function MDI_command() As Short

         Dim nret As Int16 = set_MDI_command(sz_ManualDataInput)

         If nret <> 0 Then
            EgtOutLog("Error Execute MDI Command :" + " " + nret.ToString())
         End If

         Return nret

      End Function
        '
        ' Activate program
        ' returns 0 = OK ; > 0 error
        '
      Public Overrides Function ActivateProgram(n_part_program As Integer) As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = WriteObjectVarious2(n_portNC, Mode, AUTO_M)  ' potrebbe essere anche modo 11 !

         If nret = 0 Then
            nret = WriteObjectVarious2(n_portNC, ACTIVE_PROG, n_part_program)  ' notare : numero non moltiplicato * 10
         End If

         If nret <> 0 Then
            EgtOutLog("Error in Activate program :" + " " + nret.ToString())
         End If

         global_state = eStatetype.READY
         Return nret

      End Function
        '
        ' Set DPOsition Mode OP/OM
        '
        Public Overrides Sub set_OP_OM(n As Short)




        End Sub
        '
        ' Read Once position
        ' returns 0 = OK ; > 0 error
        '
        Public Overrides Function DPOsition_ReadOnce() As Int16

           Return 1
        End Function
        '
        ' Set Cycle Start
        '
        Public Overrides Function DGeneralFunctions_CycleStart() As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If
         global_state = eStatetype.BUSY

         nret = StartNC(n_portNC)

         global_state = eStatetype.READY

         Return nret

      End Function
      '
      ' Set Feed Hold
      '
      Public Overrides Function DGeneralFunctions_FeedHold() As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = StopNC(n_portNC)

         global_state = eStatetype.READY
         Return nret

      End Function
      '
      ' Set NC Reset
      '
      Public Overrides Function DGeneralFunctions_Reset() As Int16
         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = InitNC(n_portNC)

         global_state = eStatetype.READY
         Return nret

      End Function

      Public Overrides Function DGeneralFunctions_WriteCncMode(nmode As Short) As Int16
         Dim nret As Int16 = -1

         nret = set_NC_mode(nmode)

         Return nret

      End Function

      Public Overrides Function Write_var_1(sz_par As String, lvalue As Long) As Int16

         Dim nret As Int16 = -1
         Dim n_what As UInt16

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         If sz_par = "E80000" Then  ' !!! da sistemare per beccare anche gli altri indirizzi
            n_what = E80000
            MyData.data = BitConverter.GetBytes(lvalue)

            nret = WriteObjectVarious4(n_portNC, n_what, 0, 1, MyData)
         Else
            nret = -997
         End If

         global_state = eStatetype.READY
         Return nret

      End Function
      '
      ' da PC a CN
      '
      Public Overrides Function Download_NC_prog(sz_PC_filename As String, sz_NC_filename As String) As Int16
         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         Dim l As Long = get_Num_prog_number(sz_NC_filename)

         '      nret = DncDeleteFile(iport2, l)

         nret = DownLoadFile(n_portNC, l, sz_PC_filename)

         global_state = eStatetype.READY
         Return nret

      End Function
      '
      ' da CN a pc
      '
      Public Overrides Function Upload_NC_prog(sz_PC_filename As String, sz_NC_filename As String) As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         Dim l As Long = get_Num_prog_number(sz_NC_filename)

         nret = UpLoadFile(n_portNC, l, sz_PC_filename)

         global_state = eStatetype.READY
         Return nret

      End Function

      Private Function get_Num_prog_number(sz_in As String) As Long

         Dim sz_n As String = sz_in
         Dim l_prog_num As Long

         If InStr(sz_n, "%") Then sz_n = sz_n.Replace("%", "")

         If InStr(sz_n, ".") Then
            sz_n = sz_n.Replace(".", "")
            l_prog_num = CLng(sz_n)
         Else
            l_prog_num = CLng(sz_n) * 10
         End If

         Return l_prog_num

      End Function

      Public Overrides Function Delete_NC_prog(sz_NC_filename As String) As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         Dim l As Long = get_Num_prog_number(sz_NC_filename)

         nret = DncDeleteFile(n_portNC, l)

         global_state = eStatetype.READY
         Return nret

      End Function

      Public Overrides Function DTool_set_read_range(n_start As Short, n_stop As Short) As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = ReadTool(n_portNC, n_start, 1, MyData, SYN)

         If nret = RET_OK Then

            Tools(0).lenght = 0 ' !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
            Tools(0).radius = 0
            Tools(0).comp_num = 0

            b_Tool_data_changed = True

         End If

         global_state = eStatetype.READY
         Return nret

      End Function

      Public Overrides Function DTool_write_tool(n_tool_number As Short, Length_X As Double, Radius As Double, TipRadius_Z As Double,
                                         DLength_X As Double, DTipRadius_Z As Double,
                                         nDirection As Short, nType As Short, nH As Integer) As Int16
         Dim Tool As tCorOutil

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         ' da rifare !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

         Tool.L_X = CLng(Length_X * 1000)
         Tool.R_Radus = CLng(Radius * 1000)
         Tool.RTore_Z = CLng(TipRadius_Z * 1000)
         Tool.DL_DX = 0
         Tool.DR_DZ = 0
         Tool.Direc = 0
         Tool.Type = 0

         nret = WriteTool(n_portNC, n_tool_number, 1, Tool)

         global_state = eStatetype.READY
         Return nret

      End Function

      Public Function readE80000() As Int16  ' temporanea di prova ..... 


         Dim nret As Int16 = -1
         Dim ldata As Int32

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = ReadObjectVarious4(n_portNC, E80000, 0, 1, MyData, SYN)
         If nret = 0 Then
            ldata = BitConverter.ToInt32(MyData.data, 0)
         End If

         global_state = eStatetype.READY
         Return nret


      End Function

      Public Overrides Function get_free_memory(n_zone As Int16) As Long
         '
         '
         ' usare zona 0
         '
         Dim nret As Int16 = -1

         Dim l_free_mem As Long

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = ReadMemoryFree(n_portNC, l_free_mem, n_zone)

         global_state = eStatetype.READY

         If nret = 0 Then
            Return l_free_mem
         Else
            Return -9999
         End If

      End Function

      Public Overrides Function read_active_mode() As Int16

         Return (Var600D)  ' es 0 = auto, ecc.

      End Function

      Public Overrides Function get_program_status() As Int16

         Dim nret As Int16 = -1

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         nret = ReadProgStatus(n_portNC, 0, 1, MyData, SYN)

         If nret = 0 Then

            l_GFunction = (BitConverter.ToInt32(MyData.data, 0))
            l_active_program = (BitConverter.ToInt32(MyData.data, 4))

            n_BlocExe = (BitConverter.ToInt16(MyData.data, 8))
            n_ProgError = (BitConverter.ToInt16(MyData.data, 10))
            n_BlocError = (BitConverter.ToInt16(MyData.data, 12))
            n_Tool = (BitConverter.ToInt16(MyData.data, 14))
            n_Direction = (BitConverter.ToInt16(MyData.data, 16))
            n_Corrector = (BitConverter.ToInt16(MyData.data, 18))
            n_LeftFunct = (BitConverter.ToInt16(MyData.data, 20))
         End If

         global_state = eStatetype.READY

         Return nret
      End Function

      Public Overrides Function get_plc_messages() As Int16

         Return get_errors()

      End Function

      Private Function get_errors() As Int16

         Const GROUP_ACTIVE As UInt16 = &HFFFF ' 0xFFFF=Groupe Actif

         Const MORE_MESSAGES As UInt16 = 6
         Const NO_MORE_MESSAGES As UInt16 = 15

         Dim nret As Int16 = -1, i As Short = 0

         Dim nErrorLineNum As Int16 = 0

         Dim b_int_NC_error As Boolean = False

         Dim szt As String = ""

         sz_PLC_error_messages = "PLC Errors : "

         If VerifyBusy() <> eStatetype.READY Then
            Return global_state
         End If

         global_state = eStatetype.BUSY

         ' PLC errors
         b_PLC_error = False

         iFirstVar = &H7000   ' messaggio 0 " MACCHINA OK "

         nret = ReadLadderVar(n_portNC, VBY, iFirstVar, 100, MyData, SYN)    ' max 120 bytes....
         If nret = 0 Then  ' 253 = troppi dati

            For i = 0 To 100 - 1
               If MyData.data(i) <> 0 Then
                  b_PLC_error = True
                  sz_PLC_error_messages = sz_PLC_error_messages & " " & i.ToString
               End If
            Next

            iFirstVar = &H7000 + 100  ' messaggio 100 

            nret = ReadLadderVar(n_portNC, VBY, iFirstVar, 50, MyData2, SYN)
            If nret = 0 Then  ' 253 = troppi dati

               For i = 0 To 50 - 1
                  If MyData2.data(i) <> 0 Then
                     b_PLC_error = True
                     sz_PLC_error_messages = sz_PLC_error_messages & " " & (i + 100).ToString
                  End If
               Next

            End If
         End If

         '--------------------------------------------------------------------------
         ' Visualizzazione errore CN

         b_NC_error = False
         b_int_NC_error = False

         iFirstVar = &H3
         nret = ReadLadderVar(n_portNC, R6, iFirstVar, 1, MyData, SYN)

         If MyData.data(0) <> 0 Then
            b_int_NC_error = True
         End If

         If b_int_NC_error Then

            sz_NC_error_messages.Clear()

            nErrorLineNum = 0

            n_ReadStatus = MORE_MESSAGES

            While (n_ReadStatus = MORE_MESSAGES)

               nret = DNC40_ReadCncError(n_portNC, GROUP_ACTIVE, nErrorLineNum, MyData, SYN)

               If nret = 0 Then

                  ' ErrorNumber As Integer    'Numéro d'erreur
                  ' ErrorBlockNum As Integer  'Numéro de bloc en erreur
                  ' ReadStatus As Byte        'Status de lecture: 0x0F=pas de suite 0x06=suite
                  ' MsgSize As Byte           'Nombre de caractères dans le message
                  ' MsgTab As String * 122    'Message lu

                  n_ErrorNumber = (BitConverter.ToInt16(MyData.data, 0))
                  n_ErrorBlockNum = (BitConverter.ToInt16(MyData.data, 2))
                  n_ReadStatus = MyData.data(4)
                  n_MsgSize = MyData.data(5)

                  If n_ErrorNumber <> 0 Then

                     For i = 0 To n_MsgSize - 1
                        szt = szt & System.Convert.ToChar(MyData.data(i + 6))
                     Next

                     sz_NC_error_messages.Add(szt) ' add this message to the error message list
                  End If

                  nErrorLineNum = nErrorLineNum + 1
               Else
                  n_ReadStatus = NO_MORE_MESSAGES
               End If

            End While

            b_NC_error = True
         End If ' any error

         global_state = eStatetype.READY

         Return nret

      End Function

      Function VerifyBusy()
         For I As Integer = 0 To 10
            If global_state <> eStatetype.READY Then
               System.Threading.Thread.Sleep(SLEEP_TIME)
            Else
               Exit For
            End If
         Next

         Return global_state

      End Function


#End Region





    End Class

End Namespace