Rockwell Automation Allen-Bradley 1794-IB16D - IP Addresses; General Information About IP Addresses; Determining Required Network Parameters

Rockwell Automation Publication 1794-UM061B-EN-P - March 2020 95
Configure your Digital Module on an EtherNet/IP Network Chapter 7
Data types with tag names are produced by the program.
General Information About
IP Addresses
The following information outlines steps that you must take if initially
configuring your EtherNet/IP network.
Determining Required Network Parameters
To operate on an EtherNet/IP network, you must define these parameters.
EtherNet/IP 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 between 0…255. These are reserved values that you cannot
use:
• 127.0.0.1
• 0.0.0.0
• 255.255.255.255
subnet mask Subnet addressing is an extension of the IP address scheme that allows a site to use one
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. This field is
set to 0.0.0.0 by default.
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. This field is set to 0.0.0.0 by default.