Bug 1201 - Add possibility to read out PLC run-state

silecs-communication-cpp/src/silecs-communication/interface/communication/SNAP7Connection.cpp

@@ -160,6 +160,17 @@ namespace Silecs
 		return 0;
     }
 
+    bool SNAP7Connection::isRunning(PLC* thePLC)
+    {
+		UnitStatusType statusStruct;
+		this->readUnitStatus(thePLC, statusStruct);
+		switch (statusStruct.status)
+		{
+			  case S7CpuStatusRun : return true;
+			  case S7CpuStatusStop: return false;
+			  default             : throw SilecsException(__FILE__, __LINE__, UNKNOWN_ERROR,std::string("PLC Status is: UNKNOWN"));
+		}
+    }
 
     //-------------------------------------------------------------------------------------------------------------------
 	int SNAP7Connection::readData(PLC* thePLC, unsigned long DBn, unsigned long offset, unsigned long size, unsigned char* pBuffer)

silecs-communication-cpp/src/silecs-communication/interface/communication/SNAP7Connection.h

@@ -40,6 +40,8 @@ namespace Silecs
         int readCPUInfo(PLC* thePLC, CPUInfoType& dataStruct);
         int readCPInfo(PLC* thePLC, CPInfoType& dataStruct);
 
+        bool isRunning(PLC* thePLC);
+
  		int readData(PLC* thePLC, unsigned long DBn, unsigned long offset, unsigned long size, unsigned char* pBuffer);
  		int writeData(PLC* thePLC, unsigned long DBn, unsigned long offset, unsigned long size, unsigned char* pBuffer);
 

silecs-communication-cpp/src/silecs-communication/interface/communication/SilecsConnection.cpp

@@ -263,7 +263,12 @@ namespace Silecs
         return -1;
     }
 
-    //PERFORM COLD RESTART
+    bool Connection::isRunning(PLC* thePLC)
+    {
+        throw SilecsException(__FILE__, __LINE__, DIAG_PLC_REPORT_NOT_SUPPORTED, thePLC->getName());
+        return -1;
+    }
+
     int Connection::coldRestart(PLC* thePLC)
         {
             throw SilecsException(__FILE__, __LINE__, DIAG_PLC_REPORT_NOT_SUPPORTED, thePLC->getName());

silecs-communication-cpp/src/silecs-communication/interface/communication/SilecsConnection.h

@@ -89,6 +89,10 @@ namespace Silecs
         virtual int readUnitStatus(PLC* thePLC, UnitStatusType& dataStruct);
         virtual int readCPUInfo(PLC* thePLC, CPUInfoType& dataStruct);
         virtual int readCPInfo(PLC* thePLC, CPInfoType& dataStruct);
+
+        // true if the "recvUnitStatus" is RUN, false otherwise. Throws exception on failure
+        virtual bool isRunning(PLC* thePLC);
+
         //SET PLC COLD RESTART
         virtual int coldRestart(PLC* thePLC);
         virtual int plcStop(PLC* thePLC);

silecs-communication-cpp/src/silecs-communication/interface/equipment/SilecsPLC.cpp

@@ -259,6 +259,11 @@ namespace Silecs
             return getConnection()->readUnitStatus(this, dataStruct);
         }
 
+        bool PLC::isRunning()
+        {
+            return getConnection()->isRunning(this);
+        }
+
 
         int PLC::recvCPUInfo(CPUInfoType& dataStruct)
         {

silecs-communication-cpp/src/silecs-communication/interface/equipment/SilecsPLC.h

@@ -270,7 +270,9 @@ namespace Silecs
         int recvCPUInfo(CPUInfoType& dataStruct);
         int recvCPInfo(CPInfoType& dataStruct);
 
-        //Cold RESTART
+        // true if the "recvUnitStatus" is RUN, false otherwise. Throws exception on failure
+        bool isRunning();
+
         int sendColdRestart();
         int sendPlcStop();
         /*!