Rockwell Automation 1734-AENTR EtherNet/IP Network Configuration User Manual - Manual (Page 31)

Rockwell Automation Publication ENET-UM001L-EN-P - March 2014 31
Configure an EtherNet/IP Communication Module to Operate on the Network Chapter 3
DNS Addressing To further qualify a module’s address, use DNS addressing to specify a host name
for a module, which also includes specifying a domain name and DNS servers.
DNS addressing makes it possible to set up similar network structures and IP
address sequences under different domains.
DNS addressing is necessary only if you refer to the module by host name, such as
in path descriptions in MSG instructions.
To use DNS addressing, follow these steps.
1. Assign a host name to the module.
A network administrator can assign a host name. Valid host names must be
IEC-1131-3 compliant.
2. Configure the module's parameters.
3. In addition to the IP address, subnet mask, and gateway address, configure
a host name for the module, domain name, and primary/secondary DNS
server addresses.
In the DNS server, the host name must match the IP address of the
module.
IMPORTANT Make sure the DNS enable bit is set.
If you configure your module by using RSLinx software, version
2.41, the enable bit is cleared and DNS addressing will not work. If
you configure your module by using the Port Configuration tab in
the Studio 5000 environment, the enable bit is set, so DNS
addressing will work.