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1761-NET-ENI

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Allen-Bradley 1761-NET-ENI bridges EtherNet/IP to qualified RS-232 DF1 full-duplex devices for programming, messaging, and routed controller access.
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Technical specifications for 1761-NET-ENI

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1761-NET-ENI
  • Product Family:
    MicroLogix
  • Product Type:
    MicroLogix Ethernet Interface
  • Stock:
    1
  • Ethernet interface:
    10BASE-T or 10/100BASE-T by series
  • Serial interface:
    RS-232 mini-DIN
  • Serial requirement:
    DF1 full-duplex
  • Concurrent TCP/IP connections:
    6
  • CIP connections per TCP/IP connection:
    Up to 4
  • Unconnected sends per TCP/IP connection:
    Up to 5
  • Power supply:
    20.4…26.4 V DC
  • Current draw:
    50 mA typical; 100 mA maximum
  • IP configuration:
    BOOTP, DHCP, or stored settings by series
  • Operating temperature:
    0…60 °C for supported later series
  • Weight:
    0.18 kg
  • Estimated shipping dimensions:
    11.8x5.207x6.48cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Series Mapping DF1-to-IP Routing Connection Budget Product Applications

Features:

  • Protocol bridge: EtherNet/IP access for qualified RS-232 DF1 full-duplex devices
  • Series-dependent Ethernet: speed, duplex, configuration, and diagnostic capabilities vary
  • Finite messaging capacity: six concurrent TCP/IP connections with documented buffers
1761-NET-ENI extends Ethernet access to serial controllers and devices that support the required DF1 full-duplex behavior.

Its network performance and configuration options vary by series, so the module label is part of the engineering record rather than a purchasing detail.

Commissioning should connect IP settings, route nodes, DF1 parameters, connection use, power, switch port, and recovery steps to the exact installed series.

Apter Power can coordinate official-document review, quotation, and sourcing support for 1761-NET-ENI.
Allen-Bradley 1761-NET-ENI MicroLogix Ethernet Interface Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Series A/B: retain the documented Ethernet speed and configuration boundaries for early hardware.
  • Series C: account for 10/100 auto-negotiation, wider temperature range, and improved messaging.
  • Series D: document Ethernet configuration access, forced speed or duplex, authentication, and diagnostics.
  • Serial prerequisite: qualify the attached device for RS-232 DF1 full-duplex before route setup.
  • Node map: assign route, email, and configuration functions only to their documented node groups.
  • End-to-end proof: test program access and each controller message through the actual switch and serial cable.
  • TCP/IP limit: count incoming, outgoing, and flex connections against the six-connection boundary.
  • Message buffers: account for CIP connections, unconnected sends, DF1 queues, and packet-size limits.
  • Recovery plan: preserve hardware address, IP method, fallback, reset behavior, and known-good configuration.
  • Legacy controller access: place supported DF1 full-duplex controllers on an Ethernet programming path.
  • Controller messaging: route qualified data exchanges between serial and Allen-Bradley Ethernet devices.
  • Status notification: use manufacturer-supported SMTP functions where the network and module series meet the documented conditions.
Description
1761-NET-ENI is an Ethernet interface that connects qualified RS-232 DF1 full-duplex devices to EtherNet/IP. It enables programming access and controller messaging across an Ethernet network without converting the attached serial controller into a native Ethernet processor.

The bridge behavior of 1761-NET-ENI depends on module series and configuration. Later series add 10/100 Mbps operation, DHCP or BOOTP options, forced speed and duplex controls, and improved diagnostics, while routing uses the documented node map and a finite set of TCP/IP and message buffers.

In an existing serial-controller installation, 1761-NET-ENI extends Ethernet reach without changing the attached device’s native protocol. It should therefore be treated as a bounded bridge whose usable network services depend on the hardware series, not as a general-purpose Ethernet conversion path.
Revisions

Revision Part #

Also known as

1761-NET-ENI Series A
1761-NET-ENI/A, Series A
1761-NET-ENI Series B
1761-NET-ENI/B, Series B
1761-NET-ENI Series C
1761-NET-ENI/C, Series C
1761-NET-ENI Series D
1761-NET-ENI/D, Series D
Alternative Names
Allen-Bradley 1761-NET-ENI Rockwell Automation 1761-NET-ENI AB 1761 NET ENI 1761NETENI Ethernet bridge MicroLogix Ethernet interface 1761 NET ENI DF1 gateway
Technical notes
Before commissioning 1761-NET-ENI, identify the hardware series because Ethernet speed, addressing options, and diagnostics differ across revisions. Preserve the hardware address and known IP method, then confirm the attached serial device meets the documented DF1 full-duplex requirement before connecting the interface to the production switch.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why can 1761-NET-ENI show an Ethernet link yet fail to reach the attached controller?
Verify that the serial device supports DF1 full-duplex, then check cable, baud, parity, node, IP address, route map, message type, and the module fault indicators.
How does 1761-NET-ENI series identity change Ethernet commissioning?
Read the physical series and apply its official speed, duplex, BOOTP or DHCP, authentication, diagnostic, and configuration options; do not copy a later-series plan to earlier hardware.
What can exhaust the connection capacity of 1761-NET-ENI?
Inventory incoming, outgoing, and flex TCP/IP connections, CIP sessions, unconnected sends, and polling clients, then remove duplicate paths or sequence message demand within published limits.
Can 1761-NET-ENI make any RS-232 device accessible over EtherNet/IP?
No. The attached product must meet the manufacturer DF1 full-duplex and serial-port prerequisites, and its message behavior must be validated with the intended Ethernet peer.
Which settings should be backed up before replacing 1761-NET-ENI?
Record series, hardware address, IP source and address, subnet and gateway, fallback, speed and duplex, route-node map, security mask, DF1 settings, switch port, and peer messages.
How should intermittent 1761-NET-ENI throughput be investigated?
Correlate connection count, packet size, message rate, DF1 baud, serial retries, switch errors, duplex, and controller scan demand; use the official throughput example only as a reference.

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