Allen-Bradley PowerFlex 20-comm-c FRN 1. Series User Manual page 151

Glossary-5
R
Reference/Feedback
The Reference is used to send a Reference (for example, speed,
frequency, torque) to the product. It consists of one word of input 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 a product. It consists of one
word of output 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.
RSNetWorx for ControlNet
RSNetWorx for ControlNet software is a tool for configuring and
monitoring ControlNet networks and connected devices. It is a 32-bit
operating systems application that runs on Microsoft Windows 95,
Windows 98, and Windows NT. Information about RSNetWorx for
ControlNet software can be found at http://www.software.rockwell.com/
rsnetworx.
S
Status Indicators
Status indicators are 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.
Z
Zero Data
When communications are disrupted (for example, a cable is
disconnected), the adapter and drive can respond with zero data. Zero
data results in the drive receiving zero as values for Logic Command,
Reference and Datalink data. If the drive was running and using the
Reference from the adapter, it will stay running but at zero Reference.