public bool StartListen()
{
if (IsStart)
{
currentRunMode = RunMode.OnListen;
return(true);
}
try
{
//开始监听plc
if (IsConnectPLC && IsConnectSQL)//plc和数据库同时连上
{
//开启握手
IsStart = true;
//握手信号计时器
Timer_pulse.Start();
//2.开启线程
if (Cts != null)
{
Cts.Cancel(); //取消FormLoad时PC_PLC_SignalExchange线程
}
Cts = new CancellationTokenSource();
switch (InitFormInfo.PLC)
{
case "Omron":
new Task(() => PC_PLC_SignalExchange_Omron(Cts.Token, true)).Start();
break;
case "Siemens":
new Task(() => PC_PLC_SignalExchange_Siemens(Cts.Token, true)).Start();
break;
}
//更新开始监听时菜单栏状态
currentRunMode = RunMode.OnListen;
}
else
{
//监听失败
IsStart = false;
currentRunMode = RunMode.OffListen;
MessageBox.Show("PLC或数据库未连接，程序无法启动，请检查连接！");
return(false);
}
}
catch (Exception ex)
{
UpdateShowMessage(string.Format("程序运行异常，原因:{0}", ex.Message));
LogHelper.Fatal(string.Format("程序运行异常，原因:{0}", ex.Message));
return(false);
}
return(true);
}
public bool StopListen()
{
if (!IsStart)
{
currentRunMode = RunMode.OffListen;
return(true);
}
try
{
//停止监听plc
//关闭握手
IsStart = false;
//握手信号计时器
Timer_pulse.Stop();
//2.停止交互线程
if (Cts != null)
{
Cts.Cancel(); //取消FormLoad时PC_PLC_SignalExchange线程
}
Cts = new CancellationTokenSource();
switch (InitFormInfo.PLC)
{
case "Omron":
new Task(() => PC_PLC_SignalExchange_Omron(Cts.Token, false)).Start();
break;
case "Siemens":
new Task(() => PC_PLC_SignalExchange_Siemens(Cts.Token, false)).Start();
break;
}
//更新停止监听时菜单栏状态
currentRunMode = RunMode.OffListen;
}
catch (Exception ex)
{
UpdateShowMessage(string.Format("停止程序异常，原因：{0}", ex.Message));
LogHelper.Fatal(string.Format("停止程序异常，原因：{0}", ex.Message));
currentRunMode = RunMode.OffListen;
return(false);
}
return(true);
}