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vb.net以太网通信 vb以太网通讯控件( 二 )

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cmbReadType.Items.Add("DINT32")
cmbReadType.Items.Add("HEX32")
cmbReadType.Items.Add("REAL32")
cmbReadType.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")
cmbReadMry.SelectedIndex = 3
cmbWriteMry.SelectedIndex = 3
cmbBitMry.SelectedIndex = 2
cmbReadType.SelectedIndex = 0
cmbWriteType.SelectedIndex = 0
lstRead.Items.Clear()
txtWrite.Text = ""
'
cmbCmdType.SelectedIndex = 0
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, 1000, CBool(cmbCmdType.SelectedIndex))
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 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 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
Dim mry As EntQsPlc_Asc.PlcClient.PlcMemory = cmbReadMry.SelectedIndex + 1
Dim typ As EntQsPlc_Asc.PlcClient.DataType = cmbReadType.SelectedIndex + 1
re = PLC.CmdRead(Handle1, mry, typ, CInt(txtReadAdd.Text), CUShort(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 re0 Then
Timer1.Enabled = False
butScan.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 iUBound(temp) Then
WD(i) = 0
Else
WD(i) = Trim(temp(i))
End If
Next i
Dim mry As EntQsPlc_Asc.PlcClient.PlcMemory = cmbWriteMry.SelectedIndex + 1
Dim typ As EntQsPlc_Asc.PlcClient.DataType = cmbWriteType.SelectedIndex + 1
re = PLC.CmdWrite(Handle1, mry, typ, CInt(txtWriteAdd.Text), CUShort(txtWriteCnt.Text), WD)
txtReWrite.Text = re.ToString
If re0 Then
Timer1.Enabled = False
butScan.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 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

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