Rockwell Automation 1756-IH16ISOE ControlLogix Sequence of Events Module - Manual (Page 150)

Publication 1756-UM528A-EN-P - April 2004
Glossary 2
Direct connection
A connection where the controller establishes an individual
connection with the Sequence of Events module.
Disable keying
An electronic keying protection mode that 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 feature where modules can be requested to perform an electronic
check to make sure that the physical module is consistent with
what was configured by the software
Exact match
An electronic keying protection mode that requires the physical
module and the module configured in the software to match
according to vendor, catalog number, major revision and minor
revision
First In First Out (FIFO)
Operating mode on the Sequence of Events module in which the
module timestamps an unlimited number of input transitions,
regardless of direction (i.e., either OFF to ON or ON to OFF) or input
(i.e., the same input can transition many times and the module will
timestamp every transition) and stores them in an on-board buffer.
Global positioning system (GPS)
A constellation of 24 radio navigation satellites that transmit signals
used, by GPS receivers, to determine precise location (position,
velocity, and time) solutions.
Inhibit
A ControlLogix process that allows you to configure a Sequence of
Events module but prevent it from communicating with the
owner-controller. In this case, the controller behaves as if the I/O
module does not exist at all.