Allen‑Bradley 1783-ETAP — EtherNet/IP Tap Buying Guide

By Abdullah Zahid
14 min read
Allen‑Bradley 1783-ETAP 3 Port EtherNet/IP Tap DIN-rail module for Device Level Ring machine networks

Allen‑Bradley 1783-ETAP 3 Port EtherNet/IP Tap: Specs, Pricing, and Best Alternatives

Controls engineers specifying or replacing EtherNet/IP network hardware in Rockwell-based machine panels have a specific question when they land on this page: is the Allen‑Bradley 1783-ETAP still the right tap for the job, and is it available? The 1783-ETAP is a 3 Port EtherNet/IP Tap with three copper RJ45 ports running at 10/100 Mbps, powered from 24 V DC, and designed specifically for Device Level Ring and linear EtherNet/IP topologies. It fills a narrow but important role — connecting single-port field devices into a DLR network without requiring a full managed switch. The critical context every buyer needs upfront: Rockwell Automation has published a discontinuation date of May 31, 2026, which changes how this part should be specified on new builds.

If you have already confirmed this is the right part for your system, check current pricing and availability for the 1783-ETAP at LeadTime.ca — we ship worldwide.

Who Should Buy the 1783-ETAP — and Who Shouldn't

The Allen‑Bradley 1783-ETAP is the right choice for controls and maintenance teams standardised on Rockwell EtherNet/IP who need a 3-port copper tap to add or replace nodes in an existing DLR or linear machine network. It is the correct specification when all of the following are true:

  • Your network runs EtherNet/IP and the topology is Device Level Ring or linear — not a star or tree requiring a managed switch
  • All connections in this network segment are copper RJ45 at 10/100 Mbps with no fiber runs required
  • 24 V DC control power is available in the panel and sized for the tap plus other loads
  • The enclosure meets at least IP54 protection and the environment qualifies as Pollution Degree 2 industrial
  • The discontinuation timeline (May 31, 2026) is acceptable for your project horizon and spares strategy

If your design requires fiber connectivity between segments, the 1783-ETAP1F — which combines 2 copper RJ45 ports with 1 fiber port — is the correct variant. If your application needs VLANs, more than three ports, or advanced network management, a Stratix industrial managed switch is the appropriate step up.

On this page:

What the 1783-ETAP Actually Does in a Live EtherNet/IP System

The Allen‑Bradley 1783-ETAP belongs to the Bulletin 1783 EtherNet/IP Embedded Switch Technology family. Its practical job is to act as an insertion point on an EtherNet/IP network, giving a device with only a single Ethernet port the ability to participate in a Device Level Ring without interrupting the ring topology. When that device has two ring ports natively, it can be wired directly into the ring. When it has only one port, the 1783-ETAP provides the second ring port on its behalf.

The tap's three copper RJ45 ports at 10/100 Mbps serve three logical connections: one to the device being attached, and two for the upstream and downstream ring segments. This embedded switch behaviour is what distinguishes a DLR tap from a simple patch panel or unmanaged switch — the tap participates in the ring protocol, allowing the network to recover communication around a broken segment. For linear (non-ring) topologies, the tap functions as a simple pass-through node, enabling daisy-chain device connections without requiring a centralised switch port for every device.

The 1783-ETAP provides status LEDs for power, port link, and ring status, giving maintenance technicians a first-line visual diagnostic tool without needing to access a software tool. Configuration overhead is minimal compared to a full managed switch, which is one reason panel designers choose it when the only requirement is DLR participation or linear chain expansion.

Where the 1783-ETAP Sits in a Typical Machine Network

The 1783-ETAP is a mid-level node device — it sits between the machine controller or plant Ethernet switch and the individual field devices that lack dual ring ports. Understanding where it falls in the signal chain helps avoid both over- and under-specifying this component.

  • Logix-based controller (ring supervisor configured here or on a designated managed switch) connects to the DLR ring
  • Ring segments connect to each 1783-ETAP tap via two of its three copper RJ45 ports
  • The third RJ45 port on each 1783-ETAP connects to the field device — drive, remote I/O module, HMI, or similar single-port EtherNet/IP device
  • Multiple taps daisy-chain around the ring, each adding one device to the DLR topology
  • 24 V DC panel power feeds each tap independently via terminal block connections inside the enclosure

Industries and Applications Where This Tap Is the Right Tool

In automotive and metal fabrication plants, the 1783-ETAP is commonly found on machine servo drives and I/O subsystems where the existing drive hardware carries only a single EtherNet/IP port and the machine network requires DLR redundancy. The tap inserts between ring segments without requiring replacement of the drive itself.

Food and beverage and packaging machinery OEMs use the 1783-ETAP where machine networks must tolerate a single cable fault without dropping communication to downstream devices. A broken cable anywhere on the ring trips the DLR recovery mechanism, keeping production running until the fault can be addressed during a scheduled stop.

Material handling, mining, and water/wastewater facilities use the 1783-ETAP when retrofitting older panels that were built around ControlNet or DeviceNet and are being migrated to EtherNet/IP. The tap allows existing single-port EtherNet/IP devices to join a DLR without a full panel redesign.

System integrators building modular machines for North American plants also specify the 1783-ETAP when the customer's standard calls for DLR at the machine level and the device count per ring segment is low enough that a full managed switch would be over-specified.

Application Typical Deployment
Servo drive on a DLR machine network 1783-ETAP inserted between ring segments; drive's single port connected to third tap port
Remote I/O subsystem in distributed panel Tap used to add I/O chassis into linear or ring EtherNet/IP without adding a switch
HMI terminal at machine operator station Single-port HMI connected via tap to maintain ring continuity past the operator station
Retrofit of legacy ControlNet/DeviceNet machine Tap inserted at each device point during migration to EtherNet/IP DLR topology
OEM machine export to North American plant Tap specified per customer Rockwell standard; panel fits DIN-rail form factor and 24 V DC supply

Key Specifications Engineers Need Before Ordering

Parameter Value
Catalog Number 1783-ETAP
Official Product Name 3 Port EtherNet/IP Tap
Network Ports 3 × copper RJ45, 10/100 Mbps — no fiber ports on this model
Network Protocol / Topology EtherNet/IP with embedded switch technology; supports Device Level Ring (DLR) and linear topologies
Power Supply 24 V DC nominal; external overcurrent protection required
Mounting DIN-rail
Environmental Classification Pollution Degree 2; industrial environment
Enclosure Requirement Minimum IP54 protection (enclosure must be provided)
Altitude Up to 2000 m without derating
Lifecycle Status Discontinued — no longer available for sale as of May 31, 2026

Full technical specifications are available on the product page at LeadTime.ca.

1783-ETAP vs 1783-ETAP1F vs Managed Switch: Which One Do You Actually Need?

Model Ports Typical Use Case Lifecycle Status Pricing Context
1783-ETAP 3 × copper RJ45 Short-run copper DLR or linear tap in control panels; replacement and short-horizon projects Discontinued May 31, 2026 Contact distributor for current pricing; check availability before quoting
1783-ETAP1F 2 × copper RJ45 + 1 fiber (100 Mbps full duplex) Connecting copper field devices to a fiber backbone or crossing long distances / high-EMI areas Check current Rockwell lifecycle status Typically higher than copper-only variant; verify with distributor before quoting
Stratix managed switch (Rockwell family) Multiple copper and/or fiber — varies by model Applications requiring more than 3 ports, VLANs, advanced diagnostics, or full network management Typically Preferred/Active — verify by specific catalog number Higher cost; greater feature set; verify pricing and lead time with distributor

If your layout requires a fiber segment between two copper device clusters, or if you are running cable runs that exceed what copper-only installations support in high-EMI environments, the 1783-ETAP1F is the appropriate catalog number — not the 1783-ETAP. Confirm your media type before the purchase order is submitted. Check current availability of the 1783-ETAP and its variants at LeadTime.ca.

Expert Verdict: When the 1783-ETAP Still Makes Sense

The Allen‑Bradley 1783-ETAP is a practical, no-frills 3 Port EtherNet/IP Tap that does exactly one thing well: it inserts a single-port EtherNet/IP device into a Device Level Ring or linear machine network using three copper RJ45 ports and a 24 V DC supply. For controls and maintenance teams already standardised on Rockwell EtherNet/IP who need a like-for-like replacement in an existing panel, or who are completing a machine build that references 1783-ETAP in the original BOM, this part delivers clean integration into Logix-based architectures with minimal commissioning overhead. The DIN-rail form factor fits easily into a standard control panel, and the embedded switch technology means no ring supervisor configuration is required at the tap itself.

Where the 1783-ETAP has real limits is in new projects with long service horizons. Rockwell Automation has confirmed that the 1783-ETAP will be discontinued and no longer available for sale as of May 31, 2026. Any engineer designing a machine expected to run for ten or more years should treat this as a serious constraint. If fiber connectivity is required at any point in the ring — for distance, EMI isolation, or connection to a plant fiber backbone — the 1783-ETAP is the wrong catalog number; the 1783-ETAP1F, which combines 2 copper RJ45 ports with a fiber port, is the correct choice. For applications requiring more than three ports, VLANs, or advanced network diagnostics, a Stratix managed switch is the appropriate solution — specifying the 1783-ETAP in those scenarios means the network will be under-featured from day one.

From a procurement standpoint, the discontinuation date creates a narrowing availability window. Stocking spares now for machines that reference the 1783-ETAP is a reasonable strategy, but it requires verifying actual remaining inventory across distribution channels — something a specialist distributor can do faster and more accurately than a generic supplier. A specialist distributor can also confirm whether a compatible successor is available and flag copper/fiber variant mix-ups before an incorrect part ships. If you are ready to confirm stock and lead time, view current availability for the 1783-ETAP at LeadTime.ca — we ship worldwide.

For volume pricing, multi-line BOM quotes, or to discuss migration options before committing to a build, contact the LeadTime.ca team directly — we source and ship industrial automation hardware globally.

What Engineers Need to Know Before Ordering the 1783-ETAP

Community intelligence for the Allen‑Bradley 1783-ETAP is limited — searches across Reddit, PLCTalk, PLCS.net, MrPLC, the Rockwell Automation user forum, and major distributor Q&A pages returned no meaningful model-specific discussions. The absence of recurring complaints or praise threads is itself informative: it likely reflects a combination of relatively low sales volume and a product that, where used correctly, operates without drama. However, the lack of community discussion also means there is no crowd-sourced guidance to lean on when specifying or troubleshooting this part — which makes pre-purchase validation more important, not less.

The most common specification errors with the 1783-ETAP family are not captured in forum threads — they surface in distributor conversations when engineers receive parts that do not match their design intent. The copper-versus-fiber distinction between 1783-ETAP and 1783-ETAP1F is the most frequent source of ordering errors. The catalog numbers look similar, the price difference is real, and a copper-only tap arriving at a site that was wired for fiber creates a commissioning delay that is entirely preventable with a single catalog number check before the order is submitted.

The discontinuation notice is a second area where specialist advice adds value. Generic distribution channels may not surface lifecycle status proactively — a part may appear available right up until the end-of-sale date, after which it becomes a spot-market item with unpredictable lead times. Engineers specifying the 1783-ETAP for a new machine build in 2025 or for a multi-year spares contract need a distributor who can confirm actual warehouse stock positions and advise on whether a successor product should be evaluated alongside the existing specification. LeadTime.ca provides that level of pre-purchase verification as a standard part of the quoting process.

Wiring and Installation Overview

The following is an installation overview for planning purposes. For complete wiring diagrams and detailed procedures, refer to the Rockwell Automation installation instructions for the 1783-ETAP.

  • Mount the 1783-ETAP on DIN-rail inside an industrial enclosure providing at least IP54 protection and rated for Pollution Degree 2 environments — the tap itself does not have an integral enclosure
  • Terminate 24 V DC supply wiring to the designated power terminal blocks, observing polarity and providing external overcurrent protection as specified in the Rockwell installation manual
  • Connect the two ring-segment RJ45 ports using industrial-grade Cat5e or better shielded twisted pair cable following the intended DLR topology; for a linear network, use the appropriate port assignments per the installation instructions
  • Connect the device-facing RJ45 port to the single Ethernet port on the field device — verify the cable is straight-through and meets the Cat5e or better requirement
  • Secure all cables with appropriate strain relief at the connectors; verify no mechanical stress is applied to the RJ45 interfaces before closing the enclosure

Commissioning the 1783-ETAP: What to Verify Before Going Live

  • After applying 24 V DC power, confirm the power LED on the 1783-ETAP illuminates as expected — if it does not, verify the supply voltage, polarity, and integrity of the power terminal connections
  • Check port status LEDs on all three RJ45 connections; each active link should show a link indicator on both the tap and the connected device
  • From the Logix controller or a network diagnostic tool, confirm that all EtherNet/IP devices connected through the tap are visible and reporting correctly on the network
  • If the network topology is DLR, verify that the ring supervisor (configured on the controller or a designated managed device, not on the tap itself) reports the ring as healthy with no faults
  • Document the physical port assignments, device IP addresses, and tap location in the project network diagram for future maintenance reference

Wrong-Part Prevention: Six Checks Before You Submit the Purchase Order

Review each of the following before finalising the 1783-ETAP on your BOM or purchase order:

  1. Confirm you truly need 3 copper RJ45 ports and no fiber ports; if fiber is required, consider 1783-ETAP1F or similar.
  2. Verify power supply: 24 V DC available and sized for the tap plus any additional load.
  3. Check that the control panel/enclosure can meet at least IP54 and the specified industrial environment category.
  4. Confirm the network is EtherNet/IP and that DLR or linear topologies are supported by your controllers and devices.
  5. Validate lifecycle status and that the discontinuation timeline aligns with your project and spares horizon.
  6. Check catalog number carefully (1783-ETAP vs 1783-ETAP1F or other 1783-ETAPxF variants) on the BOM, purchase order, and labeling to avoid copper/fiber mix-ups.

If any of these checks raises a question, contact LeadTime.ca before ordering — our team can verify your catalog number selection and confirm current stock and lead time worldwide.

Frequently Asked Questions

What is the difference between 1783-ETAP and 1783-ETAP1F, and how do I choose?

The 1783-ETAP provides three copper RJ45 ports at 10/100 Mbps — it is copper-only with no fiber capability. The 1783-ETAP1F provides two copper RJ45 ports and one fiber port at 100 Mbps full duplex, making it the correct choice when one segment of the ring must cross a long distance, enter a high-EMI area, or connect to a plant fiber backbone. The decision point is whether any connection in the ring segment requires fiber media. If the answer is yes for even one port, the 1783-ETAP is not the right catalog number.

How does the 1783-ETAP participate in a Device Level Ring — does it act as the ring supervisor?

The 1783-ETAP participates in a DLR network as a ring node using its embedded switch technology, but it does not serve as the ring supervisor. The ring supervisor function must be configured on a Logix controller or another designated DLR-capable managed device elsewhere on the ring. The tap's role is to pass ring traffic and allow the single-port device connected to its third port to exist as a node in the DLR topology.

What does the May 31, 2026 discontinuation date mean for my project?

Rockwell Automation has confirmed that the 1783-ETAP will be discontinued and no longer available for sale after May 31, 2026. For replacement applications or short-horizon projects already referencing this catalog number, purchasing now and stocking spares is a viable approach — but availability will narrow as the date approaches. For any new machine design with a service life extending beyond 2026, it is worth evaluating whether a successor product or an alternative from the Stratix family or 1783-ETAP1F better serves the long-term project requirement. Contact a specialist distributor to confirm current warehouse stock positions before committing to a build.

Can the 1783-ETAP be used in a linear network, or is it only for DLR rings?

The 1783-ETAP supports both Device Level Ring and linear EtherNet/IP topologies. In a linear deployment, it functions as an in-line node, allowing a single-port device to be inserted into a daisy-chain without breaking the chain. The DLR redundancy benefit only applies when the network is wired as a ring with an active ring supervisor configured on a separate device.

What do I check first if a device connected through the 1783-ETAP loses communication?

Start with the power and port status LEDs on the 1783-ETAP — a power LED that is off indicates a supply issue worth investigating at the 24 V DC terminal block and the external overcurrent protection device. A port LED that is not lit on the affected connection indicates a link-down condition, which is most commonly traced to a faulty cable, an incorrect port assignment, or a device that is powered down. If the ring supervisor is reporting a ring fault, verify that all cables are fully seated and that no ring segment has been accidentally disconnected.

What cable type is required for the 1783-ETAP, and does shielding matter?

Rockwell's installation guidance specifies industrial-grade Cat5e or better cable for the RJ45 connections. In industrial environments with significant electromagnetic noise sources — variable frequency drives, welding equipment, or high-current motor starters in proximity — shielded twisted pair cable reduces the risk of communication errors. For the DLR topology to provide its intended redundancy benefit, all cable runs should meet the specified cable quality requirements rather than relying on standard commercial patch cable.

Why Source the 1783-ETAP Through LeadTime.ca

  • LeadTime.ca ships the 1783-ETAP and related Allen-Bradley hardware worldwide — no geographic restriction on quoting or fulfillment
  • Specialist automation distributors can confirm real-time stock positions across multiple warehouses, which matters increasingly as the May 31, 2026 discontinuation date approaches
  • Pre-purchase catalog number verification — copper vs fiber variant, revision level, and compatibility — is part of the standard quoting process, not an add-on
  • Volume pricing and multi-line BOM quotes are available for OEM machine builders and system integrators; contact the team directly for project-level pricing
  • If the 1783-ETAP is constrained or no longer available, the LeadTime.ca team can identify and propose compatible successor options within the Rockwell ecosystem

At-a-Glance Summary

  • Catalog number 1783-ETAP is officially designated the 3 Port EtherNet/IP Tap by Rockwell Automation
  • Three copper RJ45 ports at 10/100 Mbps — no fiber port on this specific model
  • Supports EtherNet/IP Device Level Ring and linear topologies via embedded switch technology
  • Powered by 24 V DC nominal; external overcurrent protection is required
  • DIN-rail mounting; requires an enclosure providing at least IP54 protection; rated to Pollution Degree 2; altitude up to 2000 m without derating
  • Lifecycle status: discontinued — no longer available for sale as of May 31, 2026 per Rockwell Automation notice
  • If fiber connectivity is required, specify 1783-ETAP1F (2 copper RJ45 + 1 fiber, 100 Mbps full duplex) instead
  • If more than 3 ports, VLANs, or managed switch features are required, specify a Stratix industrial Ethernet switch instead
  • Best application: like-for-like replacement in existing DLR or linear machine networks already standardised on this catalog number

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