Rockwell Automation 20G PowerFlex 755 Drive Embedded EtherNet/IP Adapter User Manual
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Rockwell Automation Publication 750COM-UM001E-EN-P - October 2013
Glossary
Stop Action
When communication is disrupted (for example, a cable is disconnected), the
adapter and drive can respond with a stop action. A stop action results in the
drive receiving zero as values for Logic Command, Reference, and Datalink data.
If the drive was running and using the Reference from the adapter, it will stay
running but at zero Reference.
Studio 5000 Environment
The Studio 5000 Engineering and Design Environment combines engineering
and design elements into a common environment. The first element in the Studio
5000 environment is the Logix Designer application. The Logix Designer
application is the rebranding of RSLogix 5000 software and will continue to be
the product to program Logix 5000 controllers for discrete, process, batch,
motion, safety, and drive-based solutions.
The Studio 5000 environment is the foundation for the future of Rockwell
Automation engineering design tools and capabilities. It is the one place for
design engineers to develop all the elements of their control system.
Subnet Mask
An extension to the IP addressing scheme that lets you use a single network ID
for multiple physical networks. A bit mask identifies the part of the address that
specifies the network and the part of the address that specifies the unique node
on the network. A ‘1’ in the subnet mask indicates the bit is used to specify the
network. A ‘0’ in the subnet mask indicates that the bit is used to specify the
node.
For example, a subnet mask on a network may appear as follows: 11111111
11111111 11111111 11000000 (255.255.255.192). This mask indicates that 26
bits are used to identify the network and 6 bits are used to identify devices on
each network. Instead of a single physical Class C network with 254 devices, this
subnet mask divides it into four networks with up to 62 devices each.
Switches
Network devices that provide virtual connections that help to control collisions
and reduce traffic on the network. They are able to reduce network congestion by
transmitting packets to an individual port only if they are destined for the
connected device. In a control application, in which real time data access is
critical, network switches may be required in place of hubs.
TCP (Transmission Control
Protocol)
EtherNet/IP uses this protocol to transfer Explicit Messaging packets using IP.
TCP guarantees delivery of data through the use of retries.
UDP (User Datagram Protocol)
EtherNet/IP uses this protocol to transfer I/O packets using IP. UDP provides a
simple, but fast capability to send I/O messaging packets between devices. This
protocol ensures that adapters transmit the most recent data because it does not
use acknowledgements or retries.
UDDT (User-Defined Data Type)
A structure data type that you define during the development of an application
(for example, to convert 32-bit REAL parameter data for written and read values
to correctly display them in human readable format).
Update
The process of updating firmware in a device. The adapter can be updated using
various Allen-Bradley software tools. See
Updating the Adapter Firmware on
for more information.