C#与各类型PLC通信的组件和程序代码,可供学习

本文汇总了西门子、欧姆龙、三菱和施耐德等主要PLC品牌提供的高级语言编程解决方案链接,便于工程师们快速查找和使用。

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以前调试设备使用过很多次,现在将这些功能整合,可以作为松下PLC上位机VB通信的初级教程。有多个应用,以下为部分。 Public Function ImadacommPanasonic(Mymscomm As MSComm, ByVal id As Integer) Mymscomm.CommPort = id Mymscomm.Settings = "9600,o,8,1" Mymscomm.InBufferSize = 1024 Mymscomm.OutBufferSize = 512 Mymscomm.InputLen = 0 Mymscomm.InputMode = comInputModeText Mymscomm.Handshaking = comNone Mymscomm.PortOpen = True FlagConnectOK = True End Function Public Function ImadacommPanasonicOFF(Mymscomm As MSComm, ByVal id As Integer) Mymscomm.CommPort = id Mymscomm.Settings = "9600,o,8,1" Mymscomm.InBufferSize = 1024 Mymscomm.OutBufferSize = 512 Mymscomm.InputLen = 0 Mymscomm.InputMode = comInputModeText Mymscomm.Handshaking = comNone Mymscomm.PortOpen = False End Function '==============================读取D寄存区地址数据=============================== Public Function ReadNAIS_D(ByVal PLCAddress As String, ByVal ValueNum As String, ByVal PLCINstr As String, Mymscomm As MSComm) Dim OutString As String Dim instring As String Dim strMsg As String Dim fcdd As String Dim PLCOutAdd(1) As String Dim start PLCOutAdd(0) = add_0_N(PLCAddress, 5) PLCOutAdd(1) = add_0_N(CStr(Val(PLCAddress) + Val(ValueNum) - 1), 5) OutString = "#RDD" + PLCOutAdd(0) + PLCOutAdd(1) fcdd = CalBcc(OutString) OutString = OutString + fcdd + vbCr Mymscomm.Output = OutString start = Timer Do DoEvents strMsg = strMsg & Mymscomm.Input Loop Until Abs(Timer - start) > 0.1 Or Right(strMsg, 1) = vbCr If Mid(strMsg, 4, 1) = "$" Then instring = Mid(strMsg, 7, 4 * CLng(ValueNum)) ReadNAIS_D = ChangeHexHL_NW(instring) ElseIf Mid(strMsg, 4, 1) = "!" Then MsgBox ErrorCode(Mid(strMsg, 5, 2)) End If End Function
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