Rockwell Automation 1734-AENTR EtherNet/IP Network Configuration User Manual - Manual (Page 20)

20 Rockwell Automation Publication ENET-UM001L-EN-P - March 2014
Chapter 3 Configure an EtherNet/IP Communication Module to Operate on the Network
Set the Network IP Address with the Rotary Switches
This graphic shows the rotary switches on a 1756 EtherNet/IP communication
module. The location of the switches is dependant on the module.
At powerup, the module reads the rotary switches to determine if they are set to a
valid number for the last portion of the IP address. Valid numbers range from
001…254.
If the settings are a valid number, these conditions result:
• IP address = 192.168.1.
xxx (where xxx represents the switch settings)
• Subnet mask = 255.255.255.0
• Gateway address = 0.0.0.0
• The module does not have a host name assigned, nor does it use any
Domain Name System
We recommend that you set the rotary switches to a valid number before
installing the module.
If either of these conditions exist, the module attempts to use the BOOTP/
DHCP server to set the IP address:
• Rotary switches are not set to a valid number
• Module does not have rotary switches
For more information on using the BOOTP/DHCP server to set the IP address,
see
page 21 .
TIP Some modules now provide a gateway address of 192.168.1.1 when the
network address is set with rotary switches. Refer to the product
documentation to determine the correct gateway address the module uses.