static bool SendPLC_DPJ_485(string send, string mark, out string response, out int err, out string errStr)
{
bool result = false;
err = 0; errStr = "";
response = "";
//添加起始符
send = PLC_Tcp_CP.Get16String(send.Length / 2 + 1, 2) + send;
send += GetFCS(send);
send = BeginString + send + EndString;
try
{
while (DPJIsBusy)
{
Thread.Sleep(50);
}
DPJIsBusy = true;
spDPJ.DiscardInBuffer();
spDPJ.DiscardOutBuffer();
//写入串口
byte[] buffer_send = PLC_Tcp_CP.GetBytes(send);
spDPJ.Write(buffer_send, 0, buffer_send.Length);
DateTime begin = DateTime.Now;
int m = 0, n = 0;
do
{
Thread.Sleep(50);
m = spDPJ.BytesToRead;
Thread.Sleep(50);
n = spDPJ.BytesToRead;
}while ((m == 0 || m < n) && DateTime.Now <= begin.AddMilliseconds(1000));
if (DateTime.Now > begin.AddMilliseconds(1000))
{
errStr = "通讯超时";
//记录错误信息
string msg = mark + ":" + errStr;
csLog.WriteLog(msg);
}
if (m > 0)
{
byte[] buffer_response = new byte[m];
spDPJ.Read(buffer_response, 0, m);
response = PLC_Tcp_CP.GetString(buffer_response);
}
DPJIsBusy = false;
if (CheckResponse(response, out err, out errStr))
{
result = true;
}
else
{
//记录错误信息
string msg = response + "---" + mark + ":" + errStr;
csLog.WriteLog(msg);
}
}
catch (Exception ex)
{
DPJIsBusy = false;
//记录错误信息
string msg = response + "---" + mark + ":" + ex.Message;
csLog.WriteLog(msg);
}
return(result);
}