The linking device uses a link active schedule to monitor substantially {TAIL ~ all communications} on the communication network connecting {HEAD ~ the field devices} and selectively processes and analyzes the monitored communications 
The linking device uses a link active schedule to monitor substantially { TAIL ~ all communications } on the communication network connecting { HEAD ~ the field devices } and selectively processes and analyzes the monitored communications
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH