Rockwell Automation 1761-NET-DNI DeviceNet Interface (DNI) - Manual (Page 9)

9 Publication 1761-UM005B-EN-P - October 2006
Chapter
1
Overview
Introduction The DeviceNet interface is a standalone, DIN-rail or panel mounted,
intelligent DeviceNet-to-DF1 protocol-conversion device that lets
existing DF1 devices communicate on a DeviceNet network. The DF1
device exchanges I/O data with a Master device and originates and
receives DF1 encapsulated DeviceNet messages across a DeviceNet
network.
The DNI provides a single DeviceNet connection point and a single
RS-232 connection. The DeviceNet port is isolated from the DNI
digital logic and RS-232 port.
The primary functions of the DNI are:
• Collect or receive input data from the DF1 device connected on
its RS-232 port and forward that data to a connected master on
DeviceNet network.
• Monitor output data received from the DeviceNet master and
write that data to the DF1 device.
• Allow DF1 devices to send and receive messages across the
DeviceNet network.
Operating Modes The DNI can be used in either or both of the following modes.
• Peer-to-peer
• DeviceNet slave
Device Compatibility The DNI can be used to interconnect the following devices.
• MicroLogix controllers
• DF1 Full Duplex compliant products, for example: PLC-5
programmable controllers, operator interface devices, and SLC
5/03™ and higher processors