/// <summary>
/// This class writes to the PLC for Tesla
/// Tags have default values, but they can be overriden by accessing the public variables of each of the tags
/// </summary>
/// <param name="PLCIPAddress"></param>
/// <param name="_ResultsTags"></param>
/// <param name="_VehicleInfoTags"></param>
public PLCComm(string PLCIPAddress)
{
ResultsTags = new TPM_Results_Tags();
HeartbeatTime = 500; //ms. This value can also be set through a public variable.
mPLC = new Esys.IO.PLC.AB.ControlLogix();
mIPAddress = PLCIPAddress;
}
public void Initialize()
{
try {
//Setup the system logger.
mLog = new Esys.Logger(Properties.Settings.Default.PathToLogFiles, Esys.Logger.NewFileFrequency.Daily);
mLog.Write("****************************************************************************************");
mLog.Write("TPM Service starting.");
Linc.Communication.TPM_Results_Tags ResultsTags = new Linc.Communication.TPM_Results_Tags();
ResultsTags.O_SerialNumber = "TPMDataToPC.SN";
ResultsTags.O_StemCode = "TPMDataToPC.StemCode";
ResultsTags.O_Pressure = "TPMDataToPC.PSI";
ResultsTags.O_TIDfromPLC = "TPMDataToPC.TIDfromPLC";
ResultsTags.I_TIDfromPC = "TPMDataToPC.TIDfromPC";
ResultsTags.I_Heartbeat = "TPMDataToPC.HB";
ResultsTags.I_ErrorMessage = "TPMDataToPC.ErrorMessageFromPC";
//Start the PLC comms threads.
//VehicleInfo thread handles downloading MES data to PLC. ResultsFromPLC handles uploading read results from the PLC.
mLog.Write("Created PLCComm to " + Properties.Settings.Default.PLCIP.ToString());
mPLC = new Linc.Communication.PLCComm(Properties.Settings.Default.PLCIP);
mLog.Write("mPLC created");
mLog.Write("mPLC.HeartbeatTime = " + mPLC.HeartbeatTime.ToString());
//Add the tags
mPLC.ResultsTags = ResultsTags;
//Add event handlers for PLC events.
mPLC.Message += new Linc.Communication.MessageEventHandler(mPLC_MessageReceived);
mPLC.ReadResults += new Linc.Communication.NewReadResultsEventHandler(mPLC_ReadResultsReceived);
//Start the PLC object.
mLog.Write("mPLC Starting");
mPLC.Initialize();
mPLC.Start();
mLog.Write("mPLC Started");
//Test & Create the connection to the database.
if (DataManager.TestConnection(Properties.Settings.Default.DBServer, Properties.Settings.Default.DBName,
Properties.Settings.Default.DBUserName, Properties.Settings.Default.DBPassword) == false) {
mPLC.WriteErrorMessagetoPLC("TPM service failed to connect to database. Check MySQL is running on PC.");
} else {
//Connection is OK so connect.
DataManager.Initialize(Properties.Settings.Default.DBServer, Properties.Settings.Default.DBName,
Properties.Settings.Default.DBUserName, Properties.Settings.Default.DBPassword);
mLog.Write("Connection to database is good. Server = " + Properties.Settings.Default.DBServer + ", DBName=" + Properties.Settings.Default.DBName + ", User="******", DBPassword="******"FATAL ERROR DURING Initialize");
mLog.Write(ex.ToString());
throw new Exception("FATAL ERROR DURING Initialize " + ex.ToString()); //Raise an exception so the service will stop itself
}
}
