User manual

Publication ENET-UM001I-EN-P - January 2010 47
Configure an EtherNet/IP Module to Operate on the Network Chapter 4
Other Methods to Assign
Network Parameters
There are other methods to assign network parameters.
These factors might affect your choice of method:
• Network isolation from or integration into the plant/enterprise network
• Network size
For large networks, even isolated networks, it might be more convenient
and safer to
use a BOOTP/DHCP server rather than RSLogix 5000 or
RSLinx software. The BOOTP/DHCP server also limits the possibility
of assigning duplicate IP addresses.
• Company policies and procedures dealing with plant floor network
installation and maintenance
• Level of involvement by IT personnel in plant floor network installation
an
d ma
intenance
• Type of training offered to control engineers and maintenance
pe
rsonnel
If you use the Rockwell Automation BOOTP or DHCP ser
ver in an uplinked
subnet where an enterprise DHCP server exists, a module may get an address
from the enterprise server before the Rockwell Automation utility even sees
the module. You might have to disconnect from the uplink to set the address
and configure the module to retain its static address before reconnecting to the
uplink. This is not a problem if you have node names configured in the module
and leave DHCP enabled.
Assignment of Network Parameters
If Use this method for assigning network parameter Page
• A BOOTP server is not available
• The EtherNet/IP module is connected to another
NetLinx net
work
RSLinx software 48
The RSLogix 5000 project is online with the controller that
communicates to or through
the EtherNet/IP module
RSLogix 5000 programming software 50
DHCP is enabled (not BOOTP) for the EtherNet/IP module DHCP software 51
You need to cycle power to your device for some reason Thumbwheel switches 43