Linking device in a process control system that allows the formation of a control loop having {HEAD ~ function blocks} in a controller and in {TAIL ~ field devices} 
Linking device in a process control system that allows the formation of a control loop having { HEAD ~ function blocks } in a controller and in { TAIL ~ field devices }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL