User manual

42 Publication ENET-UM001I-EN-P - January 2010
Chapter 4 Configure an EtherNet/IP Module to Operate on the Network
If you use DNS addressing, or reference the module via host name in MSG
instructions, define these parameters.
Check with your Ethernet network administrator to determine if you need to
specify
these parameters.
Gateway A gateway connects individual physical networks into a system of networks. When a node
needs to communicate with a node on another network, a gateway transfers the data
between the two networks. This field is set to 0.0.0.0 by default.
EtherNet/IP Network Parameters
Eth
e
rNet/IP Network Parameter Description
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 enter a domain name. Also, if you send email from
th
e m
odule, some mail relay servers require a domain name during the initial handshake
of the SMTP session.
Primary DNS server address This identifies any DNS servers used in the network. You must have a DNS server
configured if y
ou specified a domain name or a host name in the module’
s configuration.
The DNS server converts the domain name or host name to an IP address that can be used
by the network.
For more information on DNS addressing, see
page 54 .
Secondary DNS server address