Rockwell-automation 1761-NET-DNI DeviceNet Interface (DNI) Uživatelský manuál Strana 9

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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
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