User manual
41Publication ENET-UM001I-EN-P - January 2010 41
Chapter
4
Configure an EtherNet/IP Module to Operate
on the Network
Introduction
This chapter describes how to configure an EtherNet/IP communication
module to operate on an EtherNet/IP network.
When you first install a Rockwell A
u
tomation EtherNet/IP module, the
module is BOOTP/DHCP enabled.
Determine Network
Parameters
To operate an EtherNet/IP network, you must define these parameters.
Topic Page
Determine Network Parameters 41
Set the IP Network Address 43
Assign Network Parameters via the BOOTP/DHCP Utility 45
Other Methods to Assign Network Parameters 47
Duplicate IP Address Detection 51
IP Address Swapping 53
DNS Addressing 54
Use EtherNet/IP Modules in a Logix5000 Controller Application 55
EtherNet/IP Network Parameters
EtherNet/IP Network Parameter Description
IP address The IP address uniquely identifies the module. The IP address is in the form xxx.xxx.xxx.xxx
where each xxx is
a number from 0. . .255. However, there are some reserved values that
you cannot use as the first octet in the address.
For example, you cannot use:
• 001.xxx.xxx.xxx
• 127.xxx.xxx.xxx
• 223 to 255.xxx.xxx.xxx
Subnet mask Sub
net addressing is an extension of the IP address scheme that allows a site to use a
single network ID for m
ultiple physical networks. Routing outside of the site continues by
dividing the IP address into a net ID and a host ID via the class. Inside a site, the subnet
mask is used to redivide the IP address into a custom network ID portion and host ID
portion. This field is set to 0.0.0.0 by default.
If you change the subnet mask of an already-configured module, you must cyc
le power to
the
module for the change to take effect.