Rockwell Automation 1747-KFC15 SLC500 CONTROLNET RS-232 USER MANUAL - Manual (Page 7)

P-5
1747-5.34 - June 1998
RS-232C Port
A serial port that complies with accepted industry standards for serial
communications connections.
Segment
Trunkline sections connected via taps with terminators at each end, and
with no repeaters.
Serial Port
Input/output connector for a device that transmits data and controls bits
sequentially over a single transmission line. (See RS-232C port.)
Subnet
Network segments connected by repeats to make up on ControlNet
network.
Tap
The connection device between any device and the trunkline. A tap is
required for each node and for both sides of each repeater.
Terminator
A special circuit that prevents signal reflections form occurring at the end
of the cable.
Trunkline
The bus or central part of a cable system
Trunkline Section
A length of trunkline cable between any two taps.