Because the Profinet system is a real time system, the times for {TAIL ~ LatchIN} and LatchOUT of the process data are synchronized, so that {HEAD ~ data} is exchanged on all Profinet devices simultaneously 
Because the Profinet system is a real time system , the times for { TAIL ~ LatchIN } and LatchOUT of the process data are synchronized , so that { HEAD ~ data } is exchanged on all Profinet devices simultaneously
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH