Rockwell-automation 592- E300 Overload Relay User Manual Manual de usuario descargar pdf (Pagina 281)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 281

EtherNet/IP Communications Chapter 8

Determining Network

Parameters

To operate an EtherNet/IP network, you must define these parameters.

Table 333 - EtherNet/IP Network Parameters

If DNS addressing is used or if the module is referenced via a host name in a MSG

instruction, the following parameters must be defined.

Table 334 - EtherNet/IP Network Parameters for DNS Addressing

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. Do not use the following IP addresses, as these are

reserved values:

• 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.

NOTE: 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.

IMPORTANT

Consult with your Ethernet network administrator to determine if these

parameters need to be specified.

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, refer to page 288

Secondary DNS Server Address

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