public bool connect(IPAddress ip, ushort port, bool reconnect = false)
{
try
{
omronPlc.Close();
}
catch { }
this.ip = ip;
this.port = port;
if (reconnect)
{
ConnectionStatus = ConnectionStatusEnum.RECONNECTING;
AutoReconnectAfterConnectionLostCounter++;
}
else
{
ConnectionStatus = ConnectionStatusEnum.CONNECTING;
}
tcpCommand.SetTCPParams(ip, port);
if (!tryAndConnect())
{
if (ConnectionStatus != ConnectionStatusEnum.DISCONNECTED &&
ConnectionStatus != ConnectionStatusEnum.RECONNECTING)
{
ConnectionStatus = ConnectionStatusEnum.CONNECTION_FAILED;
connectionMonitor.Enabled = false;
}
return(false);
}
ConnectionStatus = ConnectionStatusEnum.CONNECTED;
AutoReconnectAfterConnectionLostCounter = 0;
connectionMonitor.Enabled = true;
return(true);
}
private bool tryAndConnect()
{
Func <bool> testDataRead = (() =>
{
try {
if (omronPlc.finsConnectionDataRead(0))
{
return(true);
}
}
catch (Exception e) { return(false); }
return(false);
});
Func <bool> testNewConnect = (() =>
{
try
{
omronPlc = new OmronPLC(mcOMRON.TransportType.Tcp);
tcpCommand = ((mcOMRON.tcpFINSCommand)omronPlc.FinsCommand);
tcpCommand.SetTCPParams(ip, port);
if (omronPlc.Connect()) //why exception
//omronPlc.Close();
{
return(true);
}
}
catch (Exception e) { return(false); }
return(false);
});
if (testDataRead())
{
return(true);
}
else if (testNewConnect())
{
return(true);
}
return(false);
}
