PowerFlex 750-Series Drive DeviceNet Option Module User Manual
Publication 750COM-UM002A-EN-P
Glossary
A
Automatic Device Replacement (ADR)
A means for replacing a malfunctioning device with a new unit, and
having the device configuration data set automatically. The DeviceNet
scanner is set up for ADR using RSNetWorx for DeviceNet. The
scanner uploads and stores a device’s configuration. Upon replacing a
malfunctioning device with a new unit (node 63), the scanner
automatically downloads the configuration data and sets the node
address.
B
Bridge
A network device that can route messages from one network to another.
A bridge also refers to a communications module in a ControlLogix
controller that connects the controller to a network. See also scanner.
Bus Off
A bus off condition occurs when an abnormal rate of errors is detected
on the Control Area Network (CAN) bus in a device. The bus-off device
cannot receive or transmit messages on the network. This condition is
often caused by corruption of the network data signals due to noise or
data rate mismatch.
C
CAN (Controller Area Network)
CAN is a serial bus protocol on which DPI is based.
Change of State (COS) I/O Data Exchange
A device that is configured for Change of State I/O data exchange
transmits data at a specified interval if its data remains unchanged. If its
data changes, the device immediately transmits the change. This type of
exchange can reduce network traffic and save resources since
unchanged data does not need to be transmitted or processed.
CIP (Common Industrial Protocol)
CIP is the transport and application layer protocol used for messaging
over EtherNet/IP, ControlNet, and DeviceNet networks. The protocol is
used for implicit messaging (real-time I/O) and explicit messaging
(configuration, data collection, and diagnostics).
Class
A class is defined by the DeviceNet specification as “a set of objects
that all represent the same kind of system component. A class is a
generalization of an object. All objects in a class are identical in form
and behavior, but may contain different attribute values.”
ControlFLASH
An Allen-Bradley software tool that lets users electronically update
firmware on printed circuit boards.
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