// Event tag timer event
public void OnEventTimer(object sender, ElapsedEventArgs args)
{
eventTimer.Stop();
Log.Debug("FactoryData Plc Service Event Timer Event");
var recordList = new List <RecordTag>();
var resultsAvail = false;
try
{
foreach (ListTag elem in eventList)
{
string trigger = string.Concat(elem.Name, ".Trigger");
string ack = string.Concat(elem.Name, ".Ack");
string data = string.Concat(elem.Name, ".Data");
string timestamp = string.Concat(elem.Name, ".TS");
var triggerCheck = bool.Parse(logixEventDrv.Read(trigger));
if (triggerCheck == true)
{
resultsAvail = true;
var record = new RecordTag
{
TagId = elem.Id,
Data = long.Parse(logixEventDrv.Read(data)),
PlcTS = DateTime.Parse(logixEventDrv.Read(timestamp)),
};
logixEventDrv.Write(ack, 1);
Log.Debug("Subscription Tag Read:" + elem.Name + " Value:" + record.Data + " Timestamp: " + record.PlcTS);
recordList.Add(record);
logixEventDrv.Write(ack, 0);
}
}
;
}
catch (Exception ex)
{
Log.Error("Read Event Tag List exception: " + ex.Message);
}
if (resultsAvail == true)
{
var msgObject = new TagReadResultsMsg
{
List = recordList
};
var type = new Type[] { typeof(TagReadResultsMsg) };
using (var msg = new SendMessage())
{
msg.Send(msgObject, "EventTag_Results", type);
}
resultsAvail = false;
}
eventTimer.Start();
}
// Transaction udt timer event
private void OnTransactionTimer(object sender, ElapsedEventArgs e)
{
transactionTimer.Stop();
Log.Debug("FactoryData Plc Service Transaction Timer Event");
var resultList = new List <TransactionRecord>();
var resultsAvail = false;
foreach (ListTag elem in transactionList)
{
Type udtType = typeof(TransactionUDT);
var udt = new TransactionUDT();
string trigger = string.Concat(elem.Name, ".Trigger");
string ack = string.Concat(elem.Name, ".Ack");
// Trigger bit check
var triggerCheck = bool.Parse(logixTransactionDrv.Read(trigger));
if (triggerCheck == true)
{
resultsAvail = true;
try
{
udt = (TransactionUDT)logixTransactionDrv.ReadUDT(elem.Name, udtType);
}
catch (Exception ex)
{
Log.Error("Read transaction udt Exception: " + ex.Message);
}
// Transaction record
var result = new TransactionRecord
{
TagName = elem.Name,
Udt = udt
};
// Populate result list
resultList.Add(result);
// Set acknowledge bit
logixTransactionDrv.Write(ack, 1);
logixTransactionDrv.Write(ack, 0);
}
}
if (resultsAvail == true)
{
var msgObject = new TransactionResultsMsg
{
Records = resultList
};
var type = new Type[] { typeof(TransactionResultsMsg) };
using (var msg = new SendMessage())
{
msg.Send(msgObject, "TransactionTag_Results", type);
}
resultsAvail = false;
}
transactionTimer.Start();
}
// Recieve message event
private void ReadMQ_ReceiveCompleted(object sender, ReceiveCompletedEventArgs e)
{
Log.Debug("Read Message Queue Event Triggered");
//Read recieved message
var msgRead = new Message();
msgRead = readMQ.EndReceive(e.AsyncResult);
Log.Debug(msgRead.Label + " Recieved MsgID: " + msgRead.Id);
if (msgRead.Label == "Plc_Config")
{
msgRead.Formatter = new XmlMessageFormatter(new Type[] { typeof(PlcConfigMsg) });
var msgData = ((PlcConfigMsg)msgRead.Body);
// Instantiate Logix drivers
logixEventDrv = new EthernetIPforCLXCom()
{
IPAddress = msgData.IPAddress,
DisableSubscriptions = msgData.DisableSubscriptions,
PollRateOverride = msgData.PollRateOverride,
ProcessorSlot = msgData.ProcessorSlot,
Port = msgData.Port
};
Log.Information("Logix Event driver created");
logixSubscriptionDrv = new EthernetIPforCLXCom()
{
IPAddress = msgData.IPAddress,
DisableSubscriptions = msgData.DisableSubscriptions,
PollRateOverride = msgData.PollRateOverride,
ProcessorSlot = msgData.ProcessorSlot,
Port = msgData.Port
};
Log.Information("Logix Subscription driver created");
logixTransactionDrv = new EthernetIPforCLXCom()
{
IPAddress = msgData.IPAddress,
DisableSubscriptions = msgData.DisableSubscriptions,
PollRateOverride = msgData.PollRateOverride,
ProcessorSlot = msgData.ProcessorSlot,
Port = msgData.Port
};
Log.Information("Logix Transaction driver created");
// Set up read timers
eventTimer = new Timer
{
Interval = msgData.EventPollRate
};
eventTimer.Elapsed += new ElapsedEventHandler(OnEventTimer);
subscriptionTimer = new Timer
{
Interval = msgData.SubscriptionPollRate
};
subscriptionTimer.Elapsed += new ElapsedEventHandler(OnSubscriptionTimer);
transactionTimer = new Timer
{
Interval = msgData.TransactionPollRate
};
transactionTimer.Elapsed += new ElapsedEventHandler(OnTransactionTimer);
// Get tag list from database
var msgObject = new TagListReqMsg
{
getTagList = true
};
var type = new Type[] { typeof(TagListReqMsg) };
using (var msg = new SendMessage())
{
msg.Send(msgObject, "TagList_Request", type);
}
Log.Debug("Plc Config Message Processed" + " MsgID: " + msgRead.Id);
}
if (msgRead.Label == "TagList_Config")
{
msgRead.Formatter = new XmlMessageFormatter(new Type[] { typeof(TagListMsg) });
var msgData = ((TagListMsg)msgRead.Body);
eventList = new List <ListTag>();
transactionList = new List <ListTag>();
subscriptionList = new List <ListTag>();
foreach (ListTag elem in msgData.List)
{
if (elem.TagTypeId == TagTypeConstants.eventType)
{
var tag = elem;
eventList.Add(tag);
Log.Debug("Tag added to event tag list: " + tag.Name);
}
if (elem.TagTypeId == TagTypeConstants.subscriptionType)
{
var tag = elem;
subscriptionList.Add(tag);
Log.Debug("Tag added to subscription tag list: " + tag.Name);
}
if (elem.TagTypeId == TagTypeConstants.transactionType)
{
var tag = elem;
transactionList.Add(tag);
Log.Debug("Tag added to transaction tag list: " + tag.Name);
}
}
;
// Start read timers
eventTimer.Start();
transactionTimer.Start();
subscriptionTimer.Start();
Log.Debug("Read timers started ");
}
// Resume listening for messages
try
{
readMQ.BeginReceive();
Log.Information("ReadMQ Listening For Messages");
}
catch (Exception ex)
{
Log.Error("ReadMQ Begin Recieve Exception: " + ex.Message);
}
}
