Ethernet Connectivity for
provides Ethernet connectivity for all SLC, MicroLogix, and
CompactLogix controllers and other DF1 full-duplex devices. The ENI
helps you easily connect these controllers onto new or existing
Ethernet networks and upload/download programs, communicate between
controllers, and generate email messages via SMTP (simple mail
As with other
MicroLogix communication devices, the ENI can be powered via the
RS-232 communications cable when attached to a MicroLogix
controller, or externally with 24V dc when connected to other DF1
full duplex devices. It can be DIN-rail mounted, or panel mounted to
meet your installation requirements.
Series D Enhancements
The series D has been
updated with a new Ethernet communications processor and several
ease-of-use features. In addition to the features of previous
versions, Series D provides:
capability for configuration via Ethernet, with a Configuration
Security Mask provision.
Ability to force
Ethernet to 10 Mbps or 100 Mbps and half-duplex or full-duplex.
(default is still Auto Negotiate).
Added an optional
Username and Password fields for Email authentication.
Added a new
Diagnostics web page that displays a list of current Ethernet
Updated the ENIW
web pages to more closely conform to the style used on other RA
web-enabled products (more like 1756-EWEB module pages).
Series B Enhancements
Lets any device
that can initiate a CIP data table read or write on an
EtherNet/IP link through a 1761-NET-ENI/B (e.g., PanelView,
ControlLogix, RSLinx) access a Logix processor data table. This
eliminates the requirement of mapping PLC/SLC file numbers to
Logix tag names.
functional integration with CompactLogix processors by
eliminating the need for an additional ENI in CompactLogix
systems to communicate with RSLogix 5000 (1761-NET-ENI/A
requires an additional ENI at the PC running the programming
package for communication with RSLogix 5000).
several data handling improvements, such as additional buffering
and increased message queues and provides more robust
communications at increased throughput rates. In general, ENI
series B users should expect upload/download times to be about
33% longer than transferring the same file over DF1.
ENI and ENIW series B
and series C firmware can be upgraded in the field by downloading
The ENI series A
firmware cannot be upgraded in the field. For information on
upgrading your ENI series A unit to series B
Series C Enhancements
Mbps EtherNet/IP capability, which results in significant
upload/download performance improvements. Performance tests
indicate that with a 100 Mbps EtherNet/IP connection and a 38.4
Kbaud serial connection, upload/download times are typically
half as long as with Series B units.
Due to RSLinx
EtherNet /IP driver efficiency, Series C upload/download times
are typically 15-30 percent faster than a direct 38.4 Kbaud
performance access for Allen-Bradley SLC 500, MicroLogix, and
CompactLogix controller platforms.
Is included as an
upgrade option in the Step Forward Program. This offer presents
users of Series A or B units with a credit incentive when
upgrading to a Series C product.
upload/download – Upload or download user programs over
Ethernet using the ENI. The only requirement is that you use
RSLinx version 2.20 SP2 or newer.
communication – The ENI allows the attached controller to
initiate or receive messages with other controllers. The
controllers can be connected directly to Ethernet like the SLC
5/05, Ethernet PLC-5, or ControlLogix processors, or with other
ENIs (MicroLogix, SLC 5/03, CompactLogix, etc.).
communication – The ENI enables a controller to send an
ASCII string to an Email address. Send production data, alarms,
or other status information to any computer, cell phone, or
pager capable of receiving an Email message. This feature
requires a valid SMTP Email server (Simple Mail Transport
Protocol). SMTP servers are readily available via Internet
Service Providers (ISPs).
compatibility – The ENI uses the open EtherNet /IP protocol.
This industry standard open protocol provides inter device
compatibility. The ENI can exchange information with other A-B
Ethernet controllers (SLC, PLC, CompactLogix, FlexLogix and
ControlLogix) in a peer-to-peer relationship, so you don’t need
any master type device.
configure – The ENI can be configured via messages from the
attached controller, or via the
ENI utility, a free Windows-based configuration package.
10 base-T port
with embedded LEDs – Use any standard RJ Ethernet cable to
connect to your network. This minimizes connection problems and
improves startup. Embedded LEDs provide easy to see link and
mini-DIN RS-232 port – The RS-232 port provides isolation
and will auto baud on power up to detect the communications port
setting of the attached controller. Supported baud rates include
2400, 4800, 9600, 19.2k and 38.4k. This autobaud feature can
also be disabled if desired.
compact – The ENI uses the same packaging as the
DNI communication interfaces. This packaging is rugged and
can be either panel or DIN rail mounted.
Sample Ethernet Network
Connected to Ethernet via the ENI or ENIW
The ENI/ENIW can also
be used to connect a computer’s RS-232 port to EtherNet/IP and allow
program upload and download and online sessions with a maximum of
four EtherNet/IP devices. (Note: The ENI/ENIW limits the number of
outgoing connections to four).
10 Base-T (RJ45) Port
10M Hz (ENI/ENIW Series A & B)
100 Base-T (RJ45) Port
10/100M Hz(ENI/ENIW Series C)
2400, 4800, 9600, 19.2k, 38.4k baud
IEC801-2, 3, 4, 5, 6
100mA @ 24V dc
Temperature (operation / storage)
0 to 60°C / -40 to 85°C
55% to 95% non condensing
Standards and Regulatory Approvals
UL, C-UL, CE, Class I Div 2