1 Publication 1769-UM009B-EN-P - May 2002
Glossary
This term: Means:
Auto-Address
Recovery (AAR)
Auto-Address Recovery (AAR) allows a slave device to
be removed from the network and replaced with another
identical slave device that is residing on the network at
Node Address 63 and not in the Scanners Scan List.
The replacement device will have its Node Address
automatically changed to that of the device being
replaced. Depending on the level of revision keying, it
may be possible for the Node Address of the
replacement device to be changed but not brought
on-line due to a revision-keying mismatch.
Auto Device
Replacement (ADR)
The Auto Device Replacement feature automates the
replacement of a failed slave device on a DeviceNet
network by configuring the new device to the prior level
of operation. This includes Configuration Recovery (CR)
and Auto-Address Recovery (AAR).
Bridge The scanner module’s support of explicit message
transfer.
Change of State A type of I/O data communication. The scanner module
can send and receive data with slave devices that have
the change of state feature. Data is sent whenever a data
change occurs or, at the predefined heartbeat interval.
Configuration
Recovery (CR)
Configuration Recovery (CR) allows a slave device to be
removed from the network and replaced with an
identical slave device configured at the same Baud Rate
and Node Address as the device being replaced.
Controller The programmable controller, for example:
CompactLogix or MicroLogix 1500.
Cyclic A type of I/O data communication. The scanner module
can send and receive data with slave devices that have
the cyclic feature. Data is only sent at a
user-configurable rate.
Dual Mode The scanner module is in dual mode when it serves as a
master to one or more slaves and as a slave to another
master simultaneously.
EDS Electronic Data Sheet. A vendor-supplied template that
specifies how information is displayed as well as what is
an appropriate entry (value).
Explicit Messaging A type of messaging used for lower priority tasks, such
as configuration and data monitoring.
Heartbeat Rate Devices that are configured for change of state data will
send data at this rate if no data change occurs.
Host Platform The computer on which the application software is run.
Allen-Bradley Drives
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