[LONG]
V-RET=Return value (0= No new data / 2= new data (not available) / 4= Time out Frame / 5= wrong instance)
V-DATA=Array containing the frame data
V-READFRAME=Reading frame function block instance
V-WRITEFRAME=Writing frame function block instance
V-DATALENGTHCODE=Number of data byte received
V-SOURCEADDRESS=Sources address of message received
