Rockwell Automation 1794-AENTR, 1794-AENTRXT User Manual

Rockwell Automation Publication 1794-UM066C-EN-E - April 2023 17
Chapter 3
Configure the Adapter for Your EtherNet/IP
Network
Overview This chapter describes how to configure the 1794-AENTR or 1794-AENTRXT adapter for the
ControlLogix 5580 system.
Configuration Requirements Before you can use your 1794-AENTR or 1794-AENTRXT adapter, you must configure its IP address,
and optionally, its subnet mask and gateway address. You can use the Rockwell Automation
BOOTP/DHCP utility to perform the configuration. You can also use generic BOOTP software or,
within some limitations, a DHCP server.
IP Address
The IP address identifies each node on the IP network (or system of connected networks). Each
TCP/IP node on a network (including the 1794-AENTR or 1794-AENTRXT adapter) must have a unique
IP address.
The IP address is 32 bits long and has a Net ID part and a Host ID part. Networks are classified A, B,
C, or other. The class of the network determines how an IP address is formatted.
You can distinguish the class of the IP address from the first integer in its dotted-decimal IP
address as follows:
Each node on the same physical network must have an IP address of the same class and must
have the same Net ID. Each node on the same network must have a different Host ID thus giving it a
unique IP address.
IMPORTANT When using the BOOTP protocol, you must enter the Ethernet hardware
address of your adapter. Rockwell Automation assigns each 1794-AENTR or
1794-AENTRXT adapter a unique 48-bit hardware address at the factory.
The address is printed on a label on the front of your 1794-AENTR or
1794-AENTRXT adapter. It consists of six hexadecimal digits that are
separated by colons. This address is fixed by the hardware and cannot be
changed.
If you change or replace the 1794-AENTR or 1794-AENTRXT adapter, you
must enter the new Ethernet hardware address of the adapter when you
configure the new adapter.
Class A
Class B
Class C
Net ID
Net ID
Net ID
Host ID
Host ID
Host ID
0
0
0
0
10
110
89
16
17
24
25
31
31
31
Range of First Integer Class Range of First Integer Class
0…127 A 192…223 C
128…191 B 224…255 other

Rockwell Automation 1794-AENTR, 1794-AENTRXT Specifications

General

Brand	Rockwell Automation
Model	1794-AENTR, 1794-AENTRXT
Category	Adapter
Language	English