Rockwell Automation 20-COMM-L LonWorks Adapter User Manual
Page 75
Glossary
G-3
20-COMM-L LonWorks Adapter User Manual
Publication 20COMM-UM008B-EN-P
F
Fault Action
A fault action determines how the adapter and connected drive act when a
communication fault (for example, a cable is disconnected) occurs.
Fault Configuration
When communication is disrupted (for example, a cable is disconnected),
the adapter and connected 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).
H
HIM (Human Interface Module)
A device that can be used to configure and control a drive. PowerFlex
7-Class HIMs (20-HIM-xxx) 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 connected 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 continues to run at the same Reference.
I
Interoperability
The ability of systems from different manufacturers and of different types to
share information with each other without losing any of their independent
functional capabilities and without requiring complex programming by the
integrator.
I/O Data
I/O data, sometimes called ‘implicit messages’ or ‘input/output’, is
time-critical data such as a Logic Command and Reference. The terms
‘input’ and ‘output’ are defined from the controller’s point of view. Output
is produced by the controller and consumed by the adapter. Input is
produced by the adapter and consumed by the controller.
L
Logic Command/Logic Status
The Logic Command is used to control the PowerFlex 7-Class drive (for
example, start, stop, and direction). It consists of one 16-bit word of output
to the adapter from the network. The definitions of the bits in this word
depend on the drive, and are shown in
The Logic Status is used to monitor the PowerFlex 7-Class drive (for
example, operating state and motor direction). It consists of one 16-bit word
of input from the adapter to the network. The definitions of the bits in this
word depend on the drive, and are shown in
.