Rockwell Automation 1756-SYNCH ControlLogix SynchLink Module User Manual - Manual (Page 134)

Publication 1756-UM521C-EN-P - July 2004
Glossary 2
Daisy chain configuration
SynchLink configuration that begins with a master node and ends at
an end node. Center nodes may be used between the master and end
in this configuration.
Direct data
Data delivered in a single message. A SynchLink message can allocate
a maximum of four words. Direct data can be automatically forwarded
to the next node in the daisy chain configuration.
Disable keying
Option that turns off all electronic keying to the module. Requires no
attributes of the physical module and the module configured in the
software to match.
Download
The process of transferring the contents of a project on the
workstation into the controller.
Electronic keying
A system feature which makes sure that the physical module attributes
are consistent with what was configured in the software.
Exact match
An electronic keying protection mode that requires the physical
module and the module configured in the software to match
identically, according to vendor, catalog number, major revision and
minor revision.
Field side
Interface between user field wiring and I/O module.
End node
A node in SynchLink Star and Daisy chain configurations that only
receives data.