实例介绍
【实例简介】
VB与三菱Q系列PLC通讯数据传输
【实例截图】
【核心代码】
Imports System.Runtime.InteropServices
Public Class Form1
Dim Handle1 As Int32
Dim Handle2 As Int32
Dim EntLink1 As Boolean
Dim ScanCount1 As Long
Dim EntLink2 As Boolean
Dim ScanCount2 As Long
Dim PLC As New EntQsPlc_Asc.PlcClient
Public Declare Function timeGetTime Lib "winmm.dll" () As UInt32
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim i As ShImports System.Net
ort
Me.CenterToScreen()
cmbReadMry.Items.Clear()
cmbReadMry.Items.Add("X")
cmbReadMry.Items.Add("Y")
cmbReadMry.Items.Add("M")
cmbReadMry.Items.Add("D")
'
cmbReadMry2.Items.Clear()
cmbReadMry2.Items.Add("X")
cmbReadMry2.Items.Add("Y")
cmbReadMry2.Items.Add("M")
cmbReadMry2.Items.Add("D")
'
cmbWriteMry.Items.Clear()
cmbWriteMry.Items.Add("X")
cmbWriteMry.Items.Add("Y")
cmbWriteMry.Items.Add("M")
cmbWriteMry.Items.Add("D")
'
cmbWriteMry2.Items.Clear()
cmbWriteMry2.Items.Add("X")
cmbWriteMry2.Items.Add("Y")
cmbWriteMry2.Items.Add("M")
cmbWriteMry2.Items.Add("D")
'
cmbBitMry.Items.Clear()
cmbBitMry.Items.Add("X")
cmbBitMry.Items.Add("Y")
cmbBitMry.Items.Add("M")
cmbBitMry.Items.Add("D")
'
cmbBitMry2.Items.Clear()
cmbBitMry2.Items.Add("X")
cmbBitMry2.Items.Add("Y")
cmbBitMry2.Items.Add("M")
cmbBitMry2.Items.Add("D")
'
cmbReadType.Items.Clear()
cmbReadType.Items.Add("INT16")
cmbReadType.Items.Add("UINT16")
cmbReadType.Items.Add("DINT32")
cmbReadType.Items.Add("HEX32")
cmbReadType.Items.Add("REAL32")
cmbReadType.Items.Add("BIN16")
'
cmbReadType2.Items.Clear()
cmbReadType2.Items.Add("INT16")
cmbReadType2.Items.Add("UINT16")
cmbReadType2.Items.Add("DINT32")
cmbReadType2.Items.Add("HEX32")
cmbReadType2.Items.Add("REAL32")
cmbReadType2.Items.Add("BIN16")
'
cmbWriteType.Items.Clear()
cmbWriteType.Items.Add("INT16")
cmbWriteType.Items.Add("UINT16")
cmbWriteType.Items.Add("DINT32")
cmbWriteType.Items.Add("HEX32")
cmbWriteType.Items.Add("REAL32")
cmbWriteType.Items.Add("BIN16")
'
cmbWriteType2.Items.Clear()
cmbWriteType2.Items.Add("INT16")
cmbWriteType2.Items.Add("UINT16")
cmbWriteType2.Items.Add("DINT32")
cmbWriteType2.Items.Add("HEX32")
cmbWriteType2.Items.Add("REAL32")
cmbWriteType2.Items.Add("BIN16")
For i = 0 To 15 Step 1
cmbBit.Items.Add("Bit" & i)
cmbBit2.Items.Add("Bit" & i)
Next i
cmbReadMry.SelectedIndex = 2
cmbWriteMry.SelectedIndex = 2
cmbBitMry.SelectedIndex = 1
cmbBit.SelectedIndex = 0
cmbReadType.SelectedIndex = 0
cmbWriteType.SelectedIndex = 0
lstRead.Items.Clear()
txtWrite.Text = ""
'
cmbReadMry2.SelectedIndex = 2
cmbWriteMry2.SelectedIndex = 2
cmbBitMry2.SelectedIndex = 1
cmbBit2.SelectedIndex = 0
cmbReadType2.SelectedIndex = 0
cmbWriteType2.SelectedIndex = 0
lstRead2.Items.Clear()
txtWrite2.Text = ""
End Sub
Private Sub butLink_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butLink.Click
Dim re As Short
Dim restr As String = ""
re = PLC.EntLink(Trim(txtLocalIP.Text), Val(txtLocalPort.Text), Trim(txtRemoteIP.Text), Val(txtRemotePort.Text), "DEMO", Handle1)
txtReLink.Text = re.ToString
If re = 0 Then
EntLink1 = True
MsgBox("PLC联接成功! ")
Else
EntLink1 = False
MsgBox("PLC联接失败: " & restr)
End If
End Sub
Private Sub butLink2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butLink2.Click
Dim re As Short
Dim restr As String = ""
re = PLC.EntLink(Trim(txtLocalIP2.Text), Val(txtLocalPort2.Text), Trim(txtRemoteIP2.Text), Val(txtRemotePort2.Text), "DEMO", Handle2)
txtReLink2.Text = re.ToString
If re = 0 Then
EntLink2 = True
MsgBox("PLC联接成功! ")
Else
EntLink2 = False
MsgBox("PLC联接失败: " & restr)
End If
End Sub
Private Sub butClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butClose.Click
Dim re As Short
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
re = PLC.DeLink(Handle1)
txtReClose.Text = re.ToString
End Sub
Private Sub butClose2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butClose2.Click
Dim re As Short
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
re = PLC.DeLink(Handle2)
txtReClose2.Text = re.ToString
End Sub
Private Sub butRead_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butRead.Click
Dim re As Short
Dim i As Short
Dim RD() As Object
ReDim RD(Val(txtReadCnt.Text - 1))
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
re = PLC.CmdRead(Handle1, cmbReadMry.SelectedIndex 1, cmbReadType.SelectedIndex 1, Val(txtReadAdd.Text), Val(txtReadCnt.Text), RD)
txtReRead.Text = re.ToString
lstRead.Items.Clear()
For i = 0 To UBound(RD) Step 1
If Not IsNothing(RD(i)) Then lstRead.Items.Add(RD(i))
Next i
If re <> 0 Then
Timer1.Enabled = False
butScan.Text = "Cycle R/W"
End If
End Sub
Private Sub butRead2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butRead2.Click
Dim re As Short
Dim i As Short
Dim RD() As Object
ReDim RD(Val(txtReadCnt2.Text - 1))
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
re = PLC.CmdRead(Handle2, cmbReadMry2.SelectedIndex 1, cmbReadType2.SelectedIndex 1, Val(txtReadAdd2.Text), Val(txtReadCnt2.Text), RD)
txtReRead2.Text = re.ToString
lstRead2.Items.Clear()
For i = 0 To UBound(RD) Step 1
If Not IsNothing(RD(i)) Then lstRead2.Items.Add(RD(i))
Next i
If re <> 0 Then
Timer2.Enabled = False
butScan2.Text = "Cycle R/W"
End If
End Sub
Private Sub butWrite_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butWrite.Click
Dim re As Short
Dim i As Short
Dim temp() As String
Dim WD() As Object
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
ReDim WD(Val(txtWriteCnt.Text) - 1)
temp = Split(txtWrite.Text, vbCrLf)
For i = 0 To UBound(WD) Step 1
If i > UBound(temp) Then
WD(i) = 0
Else
WD(i) = Trim(temp(i))
End If
Next i
re = PLC.CmdWrite(Handle1, cmbWriteMry.SelectedIndex 1, cmbWriteType.SelectedIndex 1, Val(txtWriteAdd.Text), Val(txtWriteCnt.Text), WD)
txtReWrite.Text = re.ToString
If re <> 0 Then
Timer1.Enabled = False
butScan.Text = "Cycle R/W"
End If
End Sub
Private Sub butWrite2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butWrite2.Click
Dim re As Short
Dim i As Short
Dim temp() As String
Dim WD() As Object
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
ReDim WD(Val(txtWriteCnt2.Text) - 1)
temp = Split(txtWrite2.Text, vbCrLf)
For i = 0 To UBound(WD) Step 1
If i > UBound(temp) Then
WD(i) = 0
Else
WD(i) = Trim(temp(i))
End If
Next i
re = PLC.CmdWrite(Handle2, cmbWriteMry2.SelectedIndex 1, cmbWriteType2.SelectedIndex 1, Val(txtWriteAdd2.Text), Val(txtWriteCnt2.Text), WD)
txtReWrite2.Text = re.ToString
If re <> 0 Then
Timer2.Enabled = False
butScan2.Text = "Cycle R/W"
End If
End Sub
Private Sub butScan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butScan.Click
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Timer1.Enabled = Not Timer1.Enabled
If Timer1.Enabled Then
ScanCount1 = 0
butScan.Text = "Stop R/W"
Else
butScan.Text = "Cycle R/W"
End If
End Sub
Private Sub butScan2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butScan2.Click
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Timer2.Enabled = Not Timer2.Enabled
If Timer2.Enabled Then
ScanCount2 = 0
butScan2.Text = "Stop R/W"
Else
butScan2.Text = "Cycle R/W"
End If
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Timer1.Enabled = False
Dim tim As Integer = timeGetTime
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Call butRead_Click(Nothing, Nothing)
Call butWrite_Click(Nothing, Nothing)
If (Val(txtReRead.Text) < 0) Or (Val(txtReWrite.Text) < 0) Then
Timer1.Enabled = False
butScan.Text = "DLL SCAN"
Else
ScanCount1 = 1
txtScanCnt.Text = ScanCount1
txtScanPrd.Text = (timeGetTime - tim) & "ms"
End If
End Sub
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
Timer2.Enabled = False
Dim tim As Integer = timeGetTime
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Call butRead2_Click(Nothing, Nothing)
Call butWrite2_Click(Nothing, Nothing)
If (Val(txtReRead.Text) < 0) Or (Val(txtReWrite.Text) < 0) Then
Timer1.Enabled = False
butScan.Text = "DLL SCAN"
Else
ScanCount2 = 1
txtScanCnt.Text = ScanCount2
txtScanPrd.Text = (timeGetTime - tim) & "ms"
End If
End Sub
Private Sub butBitTest_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butBitTest.Click
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Dim rd As Boolean
Dim re As Short
re = PLC.Bit_Test(Handle1, cmbBitMry.SelectedIndex 1, Val(txtBitAdd.Text), cmbBit.SelectedIndex, rd)
txtBitTest.Text = rd
txtReBit.Text = re
End Sub
Private Sub butBitTest2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butBitTest2.Click
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Dim rd As Boolean
Dim re As Short
re = PLC.Bit_Test(Handle2, cmbBitMry2.SelectedIndex 1, Val(txtBitAdd2.Text), cmbBit2.SelectedIndex, rd)
txtBitTest2.Text = rd
txtReBit2.Text = re
End Sub
Private Sub butBitSet_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butBitSet.Click
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Dim re As Short
re = PLC.Bit_Set(Handle1, cmbBitMry.SelectedIndex 1, Val(txtBitAdd.Text), cmbBit.SelectedIndex)
txtReBit.Text = re
End Sub
Private Sub butBitSet2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butBitSet2.Click
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Dim re As Short
re = PLC.Bit_Set(Handle2, cmbBitMry2.SelectedIndex 1, Val(txtBitAdd2.Text), cmbBit2.SelectedIndex)
txtReBit2.Text = re
End Sub
Private Sub butBitRst_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butBitRst.Click
If Not EntLink1 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Dim re As Short
re = PLC.Bit_Reset(Handle1, cmbBitMry.SelectedIndex 1, Val(txtBitAdd.Text), cmbBit.SelectedIndex)
txtReBit.Text = re
End Sub
Private Sub butBitRst2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butBitRst2.Click
If Not EntLink2 Then
MsgBox("还未与PLC建立联接!")
Exit Sub
End If
Dim re As Short
re = PLC.Bit_Reset(Handle2, cmbBitMry2.SelectedIndex 1, Val(txtBitAdd2.Text), cmbBit2.SelectedIndex)
txtReBit2.Text = re
End Sub
End Class
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