Rockwell Automation GV3000/SE AC Drive ControlNet Network Communication Board, M/N 2CN3000 - Manual (Page 103)

Glossary Glossary-3
T
Tap
A component that connects products to the ControlNet trunk cable. A tap is required
for each node and for both sides of each repeater.Terminator
Terminator
A 75- Ω resistor (mounted in a BNC plug) placed on the ends of segments to prevent
reflections from occurring at the ends of cables.
Trunk-Cable
The bus or central part of the ControlNet cable system.
Trunk-Cable Section
The length of trunk cables between any two taps.
Tunable (parameter)
A parameter that can be adjusted or changed when the drive is running or stopped.
U
Unscheduled Transfers
Non-deterministic data transfers through ladder-initiated communication or
programming devices.