知识大全 c#通过网线读取三菱PLC数据

Posted 2022-07-17 网线

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　　public static bool PlcWrite(int adres int count string SendData) if (Sys PlcComUse == ) return true;

　　string s_adres = (adres + Sys PlcBaseAddress) ToString( ##### ); string s_count = count ToString( X ) PadLeft( );

　　string hdr = FF FF ; string s_data = A D* + s_adres + s_count + SendData; string n = (s_data Length ToString( X )) PadLeft( );

　　string dtfram = (hdr + n + s_data); byte[] msg = Encoding ASCII GetBytes(dtfram); plcCom txtSend Text = ABC ; Application DoEvents(); if (Sys Deb != ) return true; int byteSend = Sock Send(msg); System Text Encoding encoding = System Text Encoding UTF ; string smsg = encoding GetString(msg);

　　System DateTime Stime = DateTime Now; TimeSpan Ctime = new TimeSpan( ); do TimeSpan Ptime = (DateTime Now Stime); if (Ptime > Ctime) MessageBox Show( PLC m time out error ); return false; Application DoEvents(); while (Sock Available == );

　　int byteRec = Sock Receive(RcvBytes); string rcvstr = System Text Encoding UTF GetString(RcvBytes); plcCom txtRcv Text = rcvstr; string emsg = rcvstr Substring( ); if (emsg != ) plcCom txtRcv Text += error code + emsg; MessageBox Show( PLC m data error + emsg);

　　return true;

　　二读取PLC数据view plainprint?public static bool PlcRead(int adres int count ref string ReadData) if (Sys PlcComUse == ) return true;

　　PlcReadBusy = true; string s_adres = (adres + Sys PlcBaseAddress) ToString( ##### ); string s_count = count ToString( ### );

　　string hdr = FF FF ; string s_data = A D* + s_adres + s_count; string n = (s_data Length ToString( X )) PadLeft( );

　　string dtfram = (hdr + n + s_data); byte[] msg = Encoding ASCII GetBytes(dtfram); if (Sys Deb != ) PlcReadBusy = false; return true; int byteSend = Sock Send(msg); System Text Encoding encoding = System Text Encoding UTF ; string smsg = encoding GetString(msg);

　　System DateTime Stime = DateTime Now; TimeSpan Ctime = new TimeSpan( ); do TimeSpan Ptime = (DateTime Now Stime); if (Ptime > Ctime) MessageBox Show( PLC m time out error ); PlcReadBusy = false; return false; Application DoEvents(); while (Sock Available == );

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