Rockwell Automation 1747-KFC15 SLC500 CONTROLNET RS-232 USER MANUAL - Manual (Page 6)

P-4
1747-5.34 - June 1998
NAP (Network Access Port)
An input/output (RJ-45 style) connector for a programming terminal to
gain full access to the network.
Network
A collection of connected nodes (end devices). The connection paths
between any pair of nodes can include repeaters, routers, bridges, and
gateways.
Network Address
The network address of a node on the ControlNet network. This address
must be in the range of 1 to 99 (decimal) and be unique to that subnet. A
subnet can contain a maximum of 99 nodes.
Node
Any physical device connecting to the ControlNet network that requires a
network address in order to function on the network.
NUT (Network Update Time)
The rate at which access to the network is granted.
PCCC (Programmable Controller Communications
Commands)
An application-level command set that Allen-Bradley programmable
controllers use to communicate across networks.
Repeater
A two-port active physical layer component that reconstructs all traffic it
hears on one network segment side and retransmits it to another network
segment side. Repeaters allow for extensions in network distance,
conversion to alternate media (coaxial cable, fiber, etc.) and altering the
topology of the network.