Rockwell Automation Allen-Bradley SynchLink 1756-DM Series Design Manual page 106

Glossary 6
Publication 1756-TD008A-EN-P - August 2002
Receiver
Device that produces logic levels in a fiber optic system by using
photo diodes, resistors, amplifiers, and level shift circuits.
Remote Axis Data
Motion data used by the motion planner in the controller. The
1756-SYNCH module can consume an Axis tag from a controller and
pass it over SynchLink. A controller in another chassis can then
consume axis tags passed over SynchLink from the 1756-SYNCH
module in that chassis.
Removal and Insertion Under Power (RIUP)
A ControlLogix feature that allows a user to install or remove a
module while power is applied.
Ring Configuration
SynchLink configuration that begins with the master node.
Unidirectional data passes from the master node to up to nine other
nodes and then back to the master node.
RSLogix 5000
The programming software for any ControlLogix system.
Splice
A connection in the fiber designed to increase the distance of the
fiber.
Splitter Block
A 4-port block that converts electrical signals received from the base
block into optical signals and retransmits them through four output
ports.
Star configuration
A SynchLink topology where a hub is the physical center of the link
and acts as a multi-port repeater that contains one receive and up to
16 transmit ports. SynchLink nodes are connected to the hub. Each
node has its own direct, dedicated line to the hub. The Master node
transmitter is connected to the hub receiver. The receiver of each of
the Slave nodes is connected to an appropriate hub transmitter. The
Master node receiver and Slave node transmitters are not connected.
Messages transmitted by the Master node are retransmitted (repeated)
simultaneously to all Slave nodes by the hubs.