Rockwell Automation 1761-NET-DNI DeviceNet Interface (DNI) - Manual (Page 89)

89 Publication 1761-UM005B-EN-P - October 2006
Glossary
Interface Basics The 1761-NET-DNI (DNI) is a smart interface that provides DF1
full-duplex capable devices a connection to the DeviceNet network.
To understand how the DNI operates, you need to become familiar
with certain terms. This figure illustrates the relationship between the
DF1 Device, the DNI function, and the DeviceNet network.
1761-NET-DNI Interface Diagram
Terms and Abbreviations The following terms and abbreviations are specific to this product. For
a complete listing of Allen-Bradley terminology, refer to Allen-Bradley
Industrial Automation Glossary, publication AG-7.1.
Autobaud
A feature that allows a communications port to automatically
synchronize to the device or network that it is attached to. This feature
typically minimizes the amount of configuration required, and also
makes it easier to replace devices.
Connection Set
These methods of communication relate to how data is communicated
between master and slave. For example, a master allocates a slave I/O
connection set. The ownership allows the master to read (get) and/or
write (set) data to the slave.
COS (Change Of State)
Communication method that does not send or receive data until a
change in data is detected.
Input
Image
(To Master)
Output
Image
(From Master)
Messaging
DeviceNet
DNI
Configuration,
Parameters,
Operating Systems
MicroLogix or other DFI Device