One such function is the prepending of the protocol symbol to the first data byte of the message frame that occurs in response to {HEAD ~ handshaking} of {TAIL ~ the MCU} 
of
One such function is the prepending of the protocol symbol to the first data byte of the message frame that occurs in response to { HEAD ~ handshaking } of { TAIL ~ the MCU }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL