Rockwell Automation 20-COMM-E PowerFlex EtherNet/IP Adapter User Manual
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G-4
Glossary
20-COMM-E EtherNet/IP Adapter User Manual
Publication 20COMM-UM010G-EN-P
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
communication fault (for example, a disconnected cable) occurs or when
the controller is switched out of run mode. The former uses a
communication fault action, and the latter uses an idle fault action.
Fault Configuration
When communication is 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
Datalinks.
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 value between 0
and 255 (0x00 and 0xFF). This address is assigned in the hardware and
cannot be changed. It is required to identify the device if you are using a
BOOTP server.
HIM (Human Interface Module)
A device that can be used to configure and control a drive. PowerFlex
7-Class HIMs (catalog number 20-HIM-xx) can be used to configure
PowerFlex 7-Class drives and their connected peripherals.
Hold Last
When communication is disrupted (for example, a cable is disconnected),
the adapter and PowerFlex drive can respond by holding last. Hold last
results in the drive receiving the last data received via the network
connection before the disruption. If the drive was running and using the
Reference from the adapter, it will continue to run at the same Reference.