Allen-Bradley devicenet modules in logix5000 control systems Manual Do Utilizador

Publication DNET-UM004A-EN-P - March 2004

Automatically Configure a DeviceNet Network        4-3

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:

0

scanner

1 to 61

your devices

62

computer interface to the network, such as a 1770-KFD or 
1784-PCD device

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.

❑

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 device 

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). 

• To set the DeviceNet address of the scanner, see Set the Address of a Scanner on 

❑

3. Connect the rest of your devices 

to the network one at a time.

• Out of the box, a DeviceNet device is preset for address 63. To avoid address 

conflicts, connect and set the devices one at a time. Otherwise the address conflicts 
may prevent communication with them.

• If a device has a switch to set its baud rate, set the switch to autobaud, if available. 

Otherwise, set the device to the baud rate of the network.

• After you change the address or baud rate of a device via a switch, cycle power to 

the device.

• If a device has no switch or pushbutton for its address or baud rate, see Set the 

• After you set the address of a device, check its network status indicator. Typically, a 

solid red or flashing red indicator means an address conflict or problem with the 
baud rate.