Publication 1747-UM013B-EN-P - January 2005
Glossary
4
RIO Discrete Transfer
The exchange of image data between the scanner and adapter. RIO
discrete transfers occur continuously whenever the scanner and
adapter are communicating on the RIO link.
RIO Link
An Allen-Bradley communication system supporting high-speed serial
transfer of Remote I/O (RIO) control information. This link consists of
one master and one or more slaves.
RIO Link Device
Refers to any Allen-Bradley or licensed third party product that
connects to the RIO link as an adapter or slave device.
Scanner
The Catalog Number 1747-SN, Remote I/O Scanner, which is the
master on the RIO network.
Scanner Image
The data table area within the scanner, used to exchange I/O
information between the scanner and all the adapters on the RIO link.
The scanner image is a portion of the SLC processor image.
SLC Chassis
A physical SLC rack that houses SLC processors and 1746 and 1747
I/O modules.
SLC Processor
The processor that controls the SLC chassis in which the scanner is
installed.
Slot
The physical location in any SLC chassis used to insert I/O modules.
Specialty I/O Module
An I/O module other than a discrete I/O module (e.g., an analog
module).
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