Rockwell-automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual de usuario descargar pdf (Pagina 39)

Publication 1769-UM009E-EN-P - August 2009 39

Automatically Configure a DeviceNet Network Chapter 4

Connect Each Device to

the Network

As you connect your devices to the DeviceNet network, follow these

guidelines:

1. Assign an address to each device. The following addresses are

recommended but not required.

2. Connect the scanner and any network interface to the network.

By first connecting the scanner and/or network interface device to the

network, you reduce the number of baud rate errors as you connect the

rest of your devices:

• Scanners and network interface devices use a fixed baud rate.

• Sensors and similar DeviceNet devices use autobaud to set their baud

rate. They wait for another device to communicate. Then they set

their baud rate to the same baud rate as the other device.

• By first placing a scanner or network interface on the network, the

other devices have a baud rate against which to set their baud rate.

• Initially, leave the baud rate of the scanner and network interface at

the default setting of 125K bits/s. If you want to change the baud

rate, wait until after you establish communication with all your

devices at the default setting (125K).

•See

Set the Node Address of a Device Via a DeviceNet

Configuration Terminal

page 42

to set the scanner’s DeviceNet

address.

New devices are automatically

available.

While the scanner is in idle mode, AutoScan continues to establish communication with devices that

you connect to the network, as long as the device uses input data and output data sizes that fit in the

scanner’s I/O allocation size.

The Automatic Device Recovery

(ADR) option is not available.

You have to use RSNetWorx for DeviceNet software to edit the configuration of the scanner to use the

Automatic Device Recovery (ADR) option of a DeviceNet scanner. This turns off AutoScan.

Consideration Description

Give this address To this device

0 scanner

1…61 your devices

62 hand held configurator, such as the DeviceNet Configuration

Terminal, catalog number 193-DNCT

63 Leave open. Out of the box, a DeviceNet device is preset for

address 63. Leaving address 63 open lets you get a new device on

the network without conflicting with another device.

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 155 156

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