Rockwell Automation Publication 5069-UM002A-EN-P - January 2019 55
Connect to the Controller Chapter 2
If you use Domain Name System (DNS) addressing, or reference the controller
via host name in MSG instructions, define the following parameters.
Check with your Ethernet network administrator to determine if you must
specify the following parameters.
Set the IP Address with the BOOTP-DHCP EtherNet/IP
Commissioning Tool
The Ethernet ports on a CompactLogix 5480 controllers are DHCP-enabled
by default.
The BOOTP-DHCP tool is a standalone tool that you can use to set an IP
address. When used, the BOOTP-DHCP tool sets an IP address and other
Transport Control Protocol (TCP) parameters.
The BOOTP-DHCP tool is installed automatically when you install
RSLinx Classic software or the Logix Designer application on your computer.
Access the BOOTP-DHCP tool from one of the following locations:
• Programs > Rockwell Software® > BOOTP-DHCP Tool
• Tools directory on the Studio 5000® environment installation CD
Table 5 - EtherNet/IP Network Parameters for DNS Addressing
EtherNet/IP Network Parameter Description
Host name A host name is part of a text address that identifies the host for a module. The full text address of a module is
host_name.domain_name.
Domain name A domain name is part of a text address that identifies the domain in which the module resides. The full text address of a module is
host_name.domain_name. The domain name has a 48-character limit.
If you specify a DNS server, you must type a domain name. Also, if you send email from the module, some mail relay servers require a
domain name during the initial handshake of the SMTP session.
Primary DNS server address An address that identifies any DNS servers that are used in the network. You must have a DNS server if you specified a domain name
or a host name in the module configuration. The DNS server converts the domain name or host name to an IP address that is used by
the network.
For more information on DNS addressing, see
page 63.
Secondary DNS server address
IMPORTANT Before you start the BOOTP-DHCP tool, make sure that you have the
module hardware (MAC) address.
The MAC address scrolls across the controller status on the front of
the controller. The address uses a format similar to the following:
00-00-BC-14-55-35
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