Rockwell Automation 20-COMM-L LonWorks Adapter User Manual

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Glossary

G-5

20-COMM-L LonWorks Adapter User Manual

Publication 20COMM-UM008B-EN-P

Ping
A message that is sent by a DPI product to its peripheral devices. They use
the ping to gather data about the product, including whether it can receive
messages and whether they can log in for control.

PowerFlex 7-Class (Architecture Class) Drives
The Allen-Bradley PowerFlex 7-Class family of drives supports DPI and, at
the time of publication, includes the PowerFlex 70, PowerFlex 700,
PowerFlex 700H, PowerFlex 700S, PowerFlex 700L, and PowerFlex 7000.

PowerFlex 750-Series (Architecture Class) Drives
The Allen-Bradley PowerFlex 7-Class family of drives supports DPI and, at
the time of publication, includes the PowerFlex 753 and PowerFlex 755.

Protocols
Rules that order how information is transmitted and presented. An ‘open
protocol’ is one in which the manufacturer has made the language
‘translation’ available to anyone who wants to use it.

Reference/Feedback
The Reference is used to send a setpoint (for example, speed, frequency, or
torque) to the drive. It consists of one word of output to the adapter from the
network. The size of the word (either a 16-bit word or 32-bit word) is
determined by the drive.

Feedback is used to monitor the speed of the drive. It consists of one word
of input from the adapter to the network. The size of the word (either a
16-bit word or 32-bit word) is determined by the drive.

SCPT (Standard Configuration Property Type)
SCPTs are standardized definitions of the units, scaling, encoding, and
meaning of the contents of configuration properties.

SNVT (Standard Network Variable Type)
SNVTs are a set of predefined types of network variables with associated
units, such as degrees, centigrade, etc. SNVTs promote interoperability of
products from different manufacturers by standardizing the names given to
output and input network variables.

Status Indicators
LEDs that are used to report the status of the adapter, network, and drive.
The status indicators are on the adapter and can be viewed on the front cover
of the drive when the drive is powered.

Transceiver
A device that is both a transmitter and a receiver for a communication
channel.