Glossary
G-3
PowerFlex® 755 Drive Embedded EtherNet/IP Adapter User Manual
Publication 750COM-UM001A-EN-P
TCP/IP, UDP/IP, and CIP. Designed for industrial communications,
both I/O and explicit messages can be transmitted over the network.
Each device is assigned a unique IP address and transmits data on the
network. The number of devices that an EtherNet/IP network can
support depends on the class of IP address. For example, a network with
a Class C IP address can have 254 nodes.
General information about EtherNet/IP and the EtherNet/IP
specification are maintained by the Open DeviceNet Vendor’s
Association (ODVA). ODVA is online at
.
Explicit Messaging
Explicit messages are used to transfer data that does not require
continuous updates. They are typically used to configure, monitor, and
diagnose devices over the network.
F
Fault Action
A fault action determines how the adapter and connected drive act when
a communications fault (for example, a cable is disconnected) occurs or
when the controller is switched out of run mode. The former uses a
communications fault action, and the latter uses an idle fault action.
Fault Configuration
When communications are disrupted (for example, a cable is
disconnected), the adapter and PowerFlex drive can respond with a
user-defined fault configuration. The user sets the data that is sent to the
drive using specific fault configuration parameters in the adapter. When
a fault action parameter is set to use the fault configuration data and a
fault occurs, the data from these parameters is sent as the Logic
Command, Reference, and/or Datalink(s).
Flash Update
The process of updating firmware in a device. The adapter can be flash
updated using various Allen-Bradley software tools. Refer to
Updating the Adapter on page 3-18
for more information.
G
Gateway
A device on a network that connects an individual network to a system
of networks. When a node needs to communicate with a node on
another network, a gateway transfers the data between the two
networks. You need to configure the address for the gateway device in
the adapter if you want the adapter to communicate with devices that
are not on its network.
H
Hardware Address
Each Ethernet device has a unique hardware address (sometimes called
a MAC address) that is 48 bits. The address appears as six digits
separated by colons (for example, xx:xx:xx:xx:xx:xx). Each digit has a
