Rockwell Automation Publication 193-UM012B-EN-P - June 2011 19
Chapter
3
Configure an E1 Plus EtherNet/IP Module To
Operate on the Network
Introduction
This chapter describes how to configure an E1 Plus EtherNet/IP module to
operate on an EtherNet/IP network.
When you first install an E1 Plus EtherNet/IP module, the module is Dynamic
Host Configuration Protocol (DHCP) enabled.
Determining Network
Parameters
To operate an EtherNet/IP network, you must define these parameters.
If you use DNS addressing, or reference the module via a host name in an MSG
instruction, then define these parameters.
Table 3 - 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. These are reserved values you cannot use:
• 0.0.0.1...0.255.255.255
• 127.0.0.0...127.255.255.255
• 224.255.255.255...255.255.255.255
Subnet mask Subnet addressing is an extension of the IP address scheme that allows a site to use a single
network ID for multiple 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.
If you change the subnet mask of an already-configured module, you must cycle power to
the module for the change to take effect.
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.
Table 4 - 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 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.
Primary DNS server address This identifies any DNS servers used in the network. You must have a DNS server configured if you
specify an SMTP server with a name. 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 26.
Secondary DNS server address
