Selecting one of {HEAD ~ multiple redundant network access points} on {TAIL ~ a node} within an industrial process control network 
Selecting one of { HEAD ~ multiple redundant network access points } on { TAIL ~ a node } within an industrial process control network
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH