Connect each device to the network – Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual User Manual
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Publication 1769-UM009E-EN-P - August 2009
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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).
Set the Node Address of a Device Via a DeviceNet
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.