Rockwell Automation GV3000/SE AC Drive ControlNet Network Communication Board, M/N 2CN3000 - Manual (Page 102)

Glossary-2 GV3000/SE AC Drive ControlNet Network Communication Option Board
MSG Instruction (Message Instruction)
Instructions used by ControlNet PLC-5 processors for peer-to-peer communications.
N
NAP (Network Access Port)
A port that provides a temporary network connection through an RJ-45 connector.
Network
A series of nodes connected by some type of communication medium. The
connection paths between any pair of nodes can include repeaters, routers, bridges,
and gateways.
Network Address
A node's address on the network.
Node
The port of a physical device connected to the network that requires a network
address to function on the network. A link may contain a maximum of 107 nodes.
NUI (Network Update Interval)
A single occurrence of the network update time (NUT)
NUT (Network Update Time)
Repetitive time interval in which data can be sent on the ControlNet network.
R
Redundant media
A dual cable system that lets you receive the best signal over a network.
Repeater
A two-port active physical-layer device that reconstructs and retransmits all traffic it
hears on one segment to another segment.
S
Scheduled transfer
Deterministic and repeatable transfers that are continuous and asynchronous to the
ladder-logic program scan.
Segment
Trunk-cable sections connected via taps with terminators at each end; a segment
does not include repeaters.