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Standard devicenet communication – Rockwell Automation 1768-L45S Compact GuardLogix Controllers User Manual

Page 51

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Rockwell Automation Publication 1768-UM002C-EN-P - April 2012

51

Communicate over Networks

Chapter 4

Standard DeviceNet
Communication

The DeviceNet network uses the Common Industrial Protocol (CIP) to provide
the control, configuration, and data collection capabilities for industrial devices.

A DeviceNet network lets you connect devices directly to plant-floor controllers
without having to hardwire each device to an I/O module.

In addition to communication hardware for DeviceNet networks, these software
products are available.

The DeviceNet communication modules provide the following:

support messaging to a device, not controller to controller.

offer diagnostics for improved data collection and fault detection.

require less wiring than traditional, hardwired systems.

Table 8 - DeviceNet Interfaces

Application

Required Interface

Communicates with other DeviceNet devices
Uses the controller as a master on a DeviceNet network

1769-SDN DeviceNet
scanner

Accesses remote Compact I/O™ modules over a DeviceNet network
Sends remote I/O data for as many as 30 modules back to a scanner or controller

1769-ADN DeviceNet
adapter

(1)

(1) This table specifically describes using the 1769-ADN adapter to access remote Compact I/O modules over the DeviceNet network.

However, CompactLogix controllers can access other Allen-Bradley remote I/O modules over the DeviceNet network. In those cases,
you must select the appropriate interface. For example, if accessing remote POINT I/O modules, you must select the 1734-ADN
adapter.

Table 9 - Required Software for DeviceNet Communication

Software

Functions

Requirement

RSLogix 5000

Configure CompactLogix projects.
Define DeviceNet communication.

Yes

RSNetWorx for DeviceNet

Configure DeviceNet devices.
Define the scan list for those devices.

RSLinx

Configure communication devices.
Provide diagnostics.
Establish communication between devices.

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