Rockwell Automation 20-COMM-Q ControlNet Adapter - Manual (Page 260)

G-6 Glossary
20-COMM-C/Q ControlNet Adapter User Manual
Publication 20COMM-UM003F-EN-P
Producer/Consumer Network
On producer/consumer networks, packets are identified by content rather
than an explicit destination. If a node needs the packet, it will accept the
identifier and consume the packet. The source, therefore, sends a packet
once and all the nodes consume the same packet if they need it. Data is
produced once, regardless of the number of consumers. Also, better
synchronization than Master-Slave networks is possible because data arrives
at each node at the same time.
R Reference/Feedback
The Reference is used to send a setpoint (for example, speed, frequency, and
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.
RSLogix 5/500/5000 Software
RSLogix software is a tool for configuring and monitoring controllers to
communicate with connected devices. It is a 32-bit application that runs on
various Windows operating systems. Information about RSLogix software
can be found at
http://www.software.rockwell.com/rslogix .
RSNetWorx for ControlNet Software
A software tool for configuring and monitoring ControlNet networks and
connected devices. It is a 32-bit application that can be used on computers
running various Windows operating systems. Information about
RSNetWorx for ControlNet software can be found at
http://
www.software.rockwell.com/rsnetworx .
S Scanner
A scanner is a separate module (of a multi-module controller) or a built-in
component (of a single-module controller) that provides communication
with adapters connected to a network. See also Controller.
Status Indicators
LEDs that are used to report the status of the adapter, network, and drive.
They are on the adapter and can be viewed on the front cover of the drive
when the drive is powered.
U 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).