Option Explicit

Option Base 1


Dim WithEvents MyOPCServer As OpcServer

Dim WithEvents MyOPCGroup As OPCGroup

Dim MyOPCGroupColl As OPCGroups

Dim MyOPCItemColl As OPCItems

Dim MyOPCItems As OPCItems

Dim MyOPCItem As OPCItem

Dim plcVal() As Variant




Dim ClientHandles(100) As Long

Dim ServerHandles() As Long

Dim Values(100) As Variant

Dim Errors() As Long

Dim ItemIDs(100) As String

Dim GroupName As String

Dim NodeName As String

Dim ServerName As String

 

'---------------------------------------------------------------------

' Sub StartClient()

' Purpose: Connect to OPC_server, create group and add item

'---------------------------------------------------------------------

Sub StartClient()

  On Error GoTo ErrorHandler

  '----------- We freely can choose a ClientHandle and GroupName

  ClientHandles(1) = 1
  
  
  ClientHandles(2) = 2
 
  
  ClientHandles(3) = 3
  
  GroupName = "MyGroup"

  '----------- Get the ItemID from cell "A1"

  NodeName = Range("A1").Value
  ServerName = "OPCServer.WinCC"   'Range("B1").Value

  ItemIDs(1) = Range("A3").Value
  
  ItemIDs(2) = Range("A4").Value
  
  
  ItemIDs(3) = Range("A5").Value
  
  '增加tag2
  

  '----------- Get an instance of the OPC server

  Set MyOPCServer = New OpcServer

  MyOPCServer.Connect ServerName, NodeName

 

  Set MyOPCGroupColl = MyOPCServer.OPCGroups

  '----------- Set the default active state for adding groups

  MyOPCGroupColl.DefaultGroupIsActive = True

  '----------- Add our group to the Collection

  Set MyOPCGroup = MyOPCGroupColl.Add(GroupName)

 

  Set MyOPCItemColl = MyOPCGroup.OPCItems

  '----------- Add one item, ServerHandles are returned

  MyOPCItemColl.AddItems 2, ItemIDs, ClientHandles, ServerHandles, Errors

  '----------- A group that is subscribed receives asynchronous notifications

  MyOPCGroup.IsSubscribed = True

  Exit Sub

 

ErrorHandler:

  MsgBox "Error: " & Err.Description, vbCritical, "ERROR"
  Err.Clear
  

End Sub

 

'---------------------------------------------------------------------

' Sub StopClient()

' Purpose: Release the objects and disconnect from the server

'---------------------------------------------------------------------

Sub StopClient()

  '----------- Release the Group and Server objects
  On Error Resume Next
  MyOPCGroupColl.RemoveAll

  '----------- Disconnect from the server and clean up

  MyOPCServer.Disconnect

  Set MyOPCItemColl = Nothing

  Set MyOPCGroup = Nothing

  Set MyOPCGroupColl = Nothing

  Set MyOPCServer = Nothing

End Sub

 

Private Sub CommandButton1_Click()

End Sub

Private Sub CommandButton2_Click()

End Sub

'---------------------------------------------------------------------

' Sub MyOPCGroup_DataChange()

' Purpose: This event is fired when a value, quality or timestamp in our Group has changed

'---------------------------------------------------------------------

'----------- If OPC-DA Automation 2.1 is installed, use:

Private Sub MyOPCGroup_DataChange(ByVal TransactionID As Long, ByVal NumItems As Long, ClientHandles() As Long, ItemValues() As Variant, Qualities() As Long, TimeStamps() As Date)

 '----------- Set the spreadsheet cell values to the values read

 If NumItems = 1 Then
 
        Select Case ClientHandles(1)
           Case 1
         
                 Range("B3").Value = CStr(ItemValues(1))
               
                 Range("C3").Value = Hex(Qualities(1))
               
                 Range("D3").Value = CStr(TimeStamps(1))
         
          Case 2
              
                 Range("B4").Value = CStr(ItemValues(1))
                 
                 Range("C4").Value = Hex(Qualities(1))
                 
                 Range("D4").Value = CStr(TimeStamps(1))
                 
         Case 3
              
                 Range("B5").Value = CStr(ItemValues(1))
                 
                 Range("C5").Value = Hex(Qualities(1))
                 
                 Range("D5").Value = CStr(TimeStamps(1))
      
          Case Else
         
          End Select
         
    Else
         
                 Range("B3").Value = CStr(ItemValues(1))
               
                 Range("C3").Value = Hex(Qualities(1))
               
                 Range("D3").Value = CStr(TimeStamps(1))
         
               
                 Range("B4").Value = CStr(ItemValues(2))
                 
                 Range("C4").Value = Hex(Qualities(2))
                 
                 Range("D4").Value = CStr(TimeStamps(2))
                 
                 
         Range("B5").Value = CStr(ItemValues(3))
                 
                 Range("C5").Value = Hex(Qualities(3))
                 
                 Range("D5").Value = CStr(TimeStamps(3))
         
               
    End If
   
   
End Sub

 

Private Sub MyOPCServer_ServerShutDown(ByVal Reason As String)

End Sub

Private Sub StartOPC_Click()
StartClient
End Sub

Private Sub StopOPC_Click()
StopClient
End Sub

'---------------------------------------------------------------------

' Sub worksheet_change()

' Purpose: This event is fired when our worksheet changes, so we can write a new value

'---------------------------------------------------------------------

Private Sub worksheet_change(ByVal Selection As Range)

  '----------- Only if cell "B3" changes, write this value

  'If Selection <> Range("B2") Then Exit Sub

  'Values(1) = Selection.Cells.Value

  '----------- Write the new value in synchronous mode

  Values(1) = Range("B3")
  Values(2) = Range("B4")
  Values(3) = Range("B5")
  MyOPCGroup.SyncWrite 2, ServerHandles, Values, Errors

End Sub


Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Values(1) = Target

End Sub

[此贴子已经被作者于2022-7-19 15:22编辑过]

注释掉该条语句  也不行

[此贴子已经被作者于2022-7-27 08:24编辑过]