ADONTEC's SIEMENS SPS S7 RFC 1006 ISO-on-TCP communications library ,S7 protocol, RFC 1006, TCP/IP communications library Windows 10, Windows 7, Vista, Windows XP, Windows Server 2008, Windows Server 2003

RS_S7GetEventCode	Provides the event code, when an S7 event was reported (Event function)
RS_S7OpenLink	Open connection to a S7
RS_S7CloseLink	Close the connection with the S7
RS_S7Ready	Ready to communicate with the S7?
RS_S7GetSetConfig	Get or set the connection parameter
RS_S7OpenSession	Establish a session with the remote PLC protocol stack
RS_S7CloseSession	Terminate the session with the remote PLC protocol stack
RS_S7Fetch	Retrieve data e.g. Inputs, Outputs, Flags, Data block, Counter, Timer,..
RS_S7Write	Transfer data to the S7 and change operand values
RS_S7RequestCreate	Create a complex request in order to access different operands. This increases the data throughput again and reduces the load on the net.
RS_S7RequestSend	Transmit the request to the S7 for execution and expect data, if any
RS_S7RequestExtractData	Extract the data received from an executed complex request
RS_S7GetBoardInfoEx	Informational e.g. CPU protection (Mode, Switch, Password Level), Ethernet (ip, mac,..), ModuleName, ModuleTypeName, SerialNumber, ...
RS_S7GetPlcOrderCodeEx	Provides info on Module, HW, Firmware, Version, Mfg, ...
RS_S7GetPlcLEDStates	Provides misc. LED states
RS_S7GetPlcRunStatus	Provides run status (e.g. Run, Stop)
RS_S7GetDateTime, RS_S7SetDateTime	Get or set the actual plc date and time.
: :	: :

SuperCom reports communications events and events originating from industrial protocol modules.
An application may (optionally) use this event function to get notified e.g. on a specific progress and other conditions.
Based on compiler and SuperCom API or class library used, one or more of the following event functions are presented: UserEventProc, OnComm / OnIndustrial

OnComm(EventId)  // or OnIndustrial event function
{
    :

    if (BitsSet(EventId, EV_RXCHAR))
    {
         // any byte received
    }

    :
        // a S7 event ?
    if (BitsSet(EventId, EV_S7))
    {
             // get S7 event code
         dwS7EventCode = RS_S7GetEventCode();

         switch (dwS7EventCode)
         {
            case EV_S7_REQ_CREATED:       // request created
            case EV_S7_REQ_TRANSMIT:      // request transmitted
            case EV_S7_REQ_WAITRESPONSE:  // waiting for response
            case EV_S7_REQ_FAILED:        // no luck :(
            case EV_S7_REQ_SUCCEEDED:     // :)
            case int EV_S7_REQ_GOTDATA:   // data received (if any requested)
            case int EV_S7_REQ_COMPLETED: // done
              :
         }

            // user requests to terminate the protocol function ?
         if (bEndNow) return BREAK_S7;

    } // if EV_S7

    :
    :
}

SuperCom S7 Protocol Library