VB.NET用子線程進(jìn)行大批量數(shù)據(jù)傳輸，UI卡死，請高手指教。代碼如下

試試這個(gè)怎么樣，添加在子進(jìn)程里面，就加在你批量傳輸代碼里的每一個(gè)傳輸后面，也就是大批量中的每傳輸一個(gè)數(shù)據(jù)就暫停一下，而不是每一個(gè)大批量才暫停一下

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System.Threading.Thread.Sleep(10) '讓它走慢一點(diǎn)

能給我發(fā)個(gè)VB與三菱PLC通訊的源代碼實(shí)例嗎，非常感謝啊

得說明是什么型號(hào)的PLC啊，串口還是網(wǎng)口，VB6還是VB.NET？

算了，寫段代碼，VB.NET與Q系列以太網(wǎng)通訊的：

Imports?System.Net

Imports?System.Runtime.InteropServices

Public?Class?Form1

Dim?Handle1?As?Int32

Dim?EntLink1?As?Boolean

Dim?ScanCount1?As?Long

Dim?PLC?As?New?EntQsPlc_Asc.PlcClient'EntQsPlc_ASC.DLL是Q系列以太網(wǎng)通訊組件

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

Me.CenterToScreen()

cmbReadMry.Items.Clear()

cmbReadMry.Items.Add("X")

cmbReadMry.Items.Add("Y")

cmbReadMry.Items.Add("M")

cmbReadMry.Items.Add("D")

cmbReadMry.Items.Add("R")

cmbReadMry.Items.Add("Z")

'

cmbWriteMry.Items.Clear()

cmbWriteMry.Items.Add("X")

cmbWriteMry.Items.Add("Y")

cmbWriteMry.Items.Add("M")

cmbWriteMry.Items.Add("D")

cmbWriteMry.Items.Add("R")

cmbWriteMry.Items.Add("Z")

'

cmbBitMry.Items.Clear()

cmbBitMry.Items.Add("X")

cmbBitMry.Items.Add("Y")

cmbBitMry.Items.Add("M")

'

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")

'

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聯(lián)接成功!?")

Else

EntLink1?=?False

MsgBox("PLC聯(lián)接失敗:?"??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("還未與PLC建立聯(lián)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("還未與PLC建立聯(lián)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?re??0?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("還未與PLC建立聯(lián)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

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?re??0?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("還未與PLC建立聯(lián)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

MsgBox("還未與PLC建立聯(lián)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

butScan.Text?=?"Cycle?R/W"

Exit?Sub

Else

ScanCount1?+=?1

txtScanCnt.Text?=?ScanCount1

txtScanPrd.Text?=?(timeGetTime?-?tim)??"ms"

End?If

Timer1.Enabled?=?True

End?Sub

Private?Sub?butBitTest_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?butBitTest.Click

If?Not?EntLink1?Then

MsgBox("還未與PLC建立聯(lián)接！")

Exit?Sub

End?If

Dim?rd?As?Boolean

Dim?re?As?Short

Dim?mry?As?EntQsPlc_Asc.PlcClient.PlcMemory?=?cmbBitMry.SelectedIndex?+?1

re?=?PLC.Bit_Test(Handle1,?mry,?CUShort(txtBitAdd.Text),?rd)

txtBitTest.Text?=?rd

txtReBit.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("還未與PLC建立聯(lián)接！")

Exit?Sub

End?If

Dim?re?As?Short

re?=?PLC.Bit_Set(Handle1,?cmbBitMry.SelectedIndex?+?1,?Val(txtBitAdd.Text))

txtReBit.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("還未與PLC建立聯(lián)接！")

Exit?Sub

End?If

Dim?re?As?Short

re?=?PLC.Bit_Reset(Handle1,?cmbBitMry.SelectedIndex?+?1,?Val(txtBitAdd.Text))

txtReBit.Text?=?re

End?Sub

End?Class

VB.NET中如何處理串口通信接收的數(shù)據(jù)？

你可以預(yù)先約定一個(gè)截止附，讀取的字節(jié)統(tǒng)統(tǒng)放到緩存區(qū)里，直到讀到截止附再處理、顯示。

誰有VB和OMRON PLC 通信例子啊？能否發(fā)個(gè)原始代碼？ 再次特別感謝！

提供一個(gè)VB.NET與OMRON以太網(wǎng)通訊的代碼，是我項(xiàng)目里面復(fù)制出來的：

Dim?Handle1?As?Int32?'PLC的連接句柄

Dim?EntLink?As?Boolean?'連接標(biāo)志

Dim?PLC?As?New?FinsTcp.PlcClient?'引用OMRON的通訊組件

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

EntLink?=?True

MsgBox("PLC聯(lián)接成功!?")

Else

EntLink?=?False

MsgBox("PLC聯(lián)接失敗:?"??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

EntLink?=?False

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?EntLink?Then

MsgBox("還未與PLC建立聯(lián)接！")

Exit?Sub

End?If

Dim?mry?As?FinsTcp.PlcClient.PlcMemory?=?cmbReadMry.SelectedIndex?+?1

Dim?typ?As?FinsTcp.PlcClient.DataType?=?cmbReadType.SelectedIndex?+?1

re?=?PLC.CmdRead(Handle1,?mry,?typ,?CUShort(Val(txtReadAdd.Text)),?CUShort(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?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?EntLink?Then

MsgBox("還未與PLC建立聯(lián)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

Dim?mry?As?FinsTcp.PlcClient.PlcMemory?=?cmbWriteMry.SelectedIndex?+?1

Dim?typ?As?FinsTcp.PlcClient.DataType?=?cmbWriteType.SelectedIndex?+?1

re?=?PLC.CmdWrite(Handle1,?mry,?typ,?CUShort(Val(txtWriteAdd.Text)),?CUShort(Val(txtWriteCnt.Text)),?WD)

txtReWrite.Text?=?re.ToString

If?re??0?Then

Timer1.Enabled?=?False

butScan.Text?=?"Cycle?R/W"

End?If

End?Sub

VB.net串口通訊接收數(shù)據(jù)寫法

Do

Application.DoEvents()

Loop?Until?MSComm1.InBufferCount?=?13

Dim?a?As?String?=?MSComm1.Input

Label1.Caption?=?a.Substring(1,?9)

Label2.Caption?=?a.Substring(10,?3)

用vb.net實(shí)現(xiàn)網(wǎng)絡(luò)通信

用 vb.net socket通信

Dim th As Threading.Thread

2 Dim tcpl As System.Net.Sockets.TcpListener

3

4 Private Sub Form1_Load()Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

5 th = New System.Threading.Thread(New System.Threading.ThreadStart(AddressOf MyListen))

6 th.Start()

7 End Sub

8

9 Public Sub SendMessage()Sub SendMessage(ByVal IP As String, ByVal SendMsg As String)

10 Try

11 If IP "" Then

12 Dim tcpc As New System.Net.Sockets.TcpClient(IP, 5656)

13 Dim tcpStream As Net.Sockets.NetworkStream = tcpc.GetStream

14 Dim reqStream As New IO.StreamWriter(tcpStream)

15 reqStream.Write(SendMsg)

16 reqStream.Flush()

17 tcpStream.Close()

18 tcpc.Close()

19 End If

20 Catch ex As Exception

21 MsgBox(ex.Message.ToString)

22 End Try

23 End Sub

24 Private Sub MyListen()Sub MyListen()

25 Try

26 Dim ipAddress As System.Net.IPAddress = System.Net.Dns.Resolve(System.Net.Dns.GetHostName).AddressList(0)

27 tcpl = New System.Net.Sockets.TcpListener(ipAddress, 5656)

28 tcpl.Start()

29 While True

30 Dim s As System.Net.Sockets.Socket = tcpl.AcceptSocket()

31 Dim MyBuffer(1024) As Byte

32 Dim i As Integer

33 i = s.Receive(MyBuffer)

34 If i 0 Then

35 Dim lstrRec As String

36 Dim j As Integer

37 For j = 0 To i - 1

38 TextBox1.Text += Chr(MyBuffer(j)) ","

39 Next

40 End If

41 End While

42 Catch ex As Exception

43 MsgBox(ex.Message.ToString)

44 End Try

45 End Sub

46

47 Private Sub Button1_Click()Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

48 SendMessage("192.168.0.61", TextBox2.Text)

49 End Sub

文章題目：關(guān)于vb.net通訊測試代碼的信息
標(biāo)題路徑：http://vcdvsql.cn/article18/hecegp.html

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