Rockwell Automation 1756-Enxxx_Ewxxx EtherNet/IP Modules Installation Instructions - Manual (Page 17)

Rockwell Automation Publication ENET-IN002F-EN-P - January 2014 17
Install a 1756 EtherNet/IP Communication Module Chapter 1
Set the Network IP Address with the Rotary Switches
This graphic shows the rotary switches on a 1756 EtherNet/IP communication
module. Depending on the module, the switches are on the top or the side of 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, that is, if the numbers are in
the 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
= 192.168.1.1 for firmware revision 5.008 or later
= 0.0.0.0 for firmware revision 5.007 or earlier
• 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.
IMPORTANT The gateway address of 192.168.1.1 applies only to the 1756-EN2T,
1756-EN2TR, 1756-EN2TRXT, 1756-EN2F, 1756-EN2TSC, and
1756-EN3TR modules with firmware revision 5.008 or later. Other
modules use the gateway address of 0.0.0.0 with firmware revision
5.007 or earlier.
For more information, see the Ethernet Design Considerations
Reference Manual, publication
ENET-RM002 .
32454
Rotary Switches
Front of
Module