Allen-Bradley DeviceNet 1761-NET-DNI, User Manual, Page: 95 / 101

1761-6.5
Glossary
Interface Basics
The 1761-NET-DNI (DNI) is a smart interface that provides DF1 Full Duplex capable
devices a connection to DeviceNet. To understand how the DNI operates, you need to
become familiar with certain terms. The figure below 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 the 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.
DeviceNet Master
A product capable of owning input/output (I/O) on DeviceNet.
Input
Image
(To Master)
Output
Image
(From Master)
Messaging
DeviceNet
DNI
Configuration,
Parameters,
Operating Systems
MicroLogix or other DFI Device
AB Parts