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Description
Application Scenarios
Consider a bottling plant where several PowerFlex 525 drives with only a single Ethernet port must participate in a Device Level Ring (DLR) supervised by a ControlLogix controller for high-availability motion coordination. Traditional unmanaged switches cannot join a DLR, and installing full Layer-2 managed switches at every drive node is cost-prohibitive and consumes excessive panel space. The solution: install a 1783-ETAP1F adjacent to each drive. The two copper ports pass the ring through (Port 1 ←→ Port 2) while the drive connects to either copper port or—if the facility spans a motor room with heavy EMI—the fiber port links back to a central multimode backbone. The 1783-ETAP1F transparently forwards CIP Sync (IEEE 1588), IGMP snooping, and DLR beacon frames, allowing the single-port drive to become a fully functional ring member with zero configuration. This resolves the classic pain point of retrofitting single-port intelligent devices into redundant ring topologies while providing galvanic isolation and EMI immunity via fiber—all in a compact DIN-rail-mounted package that draws less than 5 W.
Parameter
| Main Parameters | Value / Description |
|---|---|
| Product Model | 1783-ETAP1F |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Category | EtherNet/IP Embedded Tap Module (3-Port Unmanaged Tap with Copper + Fiber) |
| Copper Ethernet Ports | 2 × 10/100Base-TX RJ45, auto-negotiation, auto MDI/MDIX, full/half duplex |
| Fiber Optic Port | 1 × 100Base-FX multimode, LC duplex connector; 62.5/125 µm or 50/125 µm; up to 2 km (6560 ft) |
| Supported Topology | Linear (daisy-chain) and Device Level Ring (DLR) via embedded switch pass-through |
| Power Supply | 24 V DC nominal (20.4–27.6 V DC), Class 2 / SELV; screw-terminal DC input with reverse polarity protection |
| Current / Power Draw | Max 200 mA @ 24 V DC / Max 4.8 W |
| Link / Activity Indicators | OK LED (system status), Link/Act per copper port, Fiber Link LED |
| Operating Temp / Humidity | -25 °C to +60 °C (-13 °F to +140 °F); 5–95% RH non-condensing (IEC 60068-2) |
| Enclosure Rating | IP30 (metal housing), NEMA Type 1 equivalent |
| Mounting Method | 35 mm DIN Rail (EN 50022) or panel mount via M4 screws; horizontal or vertical orientation |
| Dimensions (H×W×D) | 105 mm × 35 mm × 105 mm (4.13″ × 1.38″ × 4.13″) |
| Certifications | cULus Listed (Class I Div 2 Groups A-D), CE, C-Tick, KC, ODVA EtherNet/IP Conformance |
Technical Principles and Innovative Values
- Innovation Point 1 – Native DLR & Linear Topology Insertion for Single-Port Devices: Unlike a standard unmanaged switch that breaks a Device Level Ring, the 1783-ETAP1F uses Embedded Switch Technology where the two copper ports (Net 1 ↔ Net 2) form a transparent pass-through. A single-port device connected to the tap—or to the fiber port—becomes part of the ring without disrupting beacon propagation. This makes the 1783-ETAP1F uniquely suited for adding legacy or cost-sensitive single-Ethernet nodes to a redundant EtherNet/IP DLR.
- Innovation Point 2 – Copper-to-Fiber Media Conversion with EMI Immunity: The onboard 100Base-FX multimode LC fiber port allows the 1783-ETAP1F to bridge electrically noisy areas (near large VFDs, welders, or high-voltage switchgear) via optical fiber, extending communication distance up to 2 km while completely eliminating ground-loop and EMI-induced packet loss—a critical advantage in metalworking, mining, and pulp & paper environments.
- Innovation Point 3 – Zero-Configuration “Plug-and-Play” Operation: The 1783-ETAP1F requires no IP address assignment, no BOOTP/DHCP, and no software configuration. It transparently forwards all Ethernet frames including EtherNet/IP implicit/explicit messages, CIP Sync (IEEE 1588 v1/v2), and IGMP packets. Commissioning consists solely of applying 24 V DC and connecting the cables—reducing startup time and eliminating network misconfiguration risks.
- Innovation Point 4 – Compact DIN-Rail Form Factor with Diagnostic LEDs: At just 35 mm wide (one 1769-slot equivalent), the 1783-ETAP1F fits easily into crowded enclosures. Front-panel OK, Link/Act (copper), and Fiber Link LEDs give instant visual confirmation of power and physical-layer health, accelerating field troubleshooting compared to blind media converters or buried patch-panel splices.
Application Cases and Industry Value
Case 1 – Automotive Paint Shop VFD Ring with Fiber Uplink:An automotive OEM needed to add twelve PowerFlex 753 drives (single Ethernet port each) into a DLR supervised by a 1756-EN2T module, with the drive section located in a high-EMI paint booth area. Installing a full managed switch per drive was rejected on cost and space grounds. The integrator mounted a 1783-ETAP1F next to each drive: the two copper ports daisy-chained the ring through the booth, the drive connected to one copper port, and a multimode fiber pair linked the booth entry/exit to the main plant star network via 1783-ETAP2F taps at each end. Result: full DLR redundancy preserved, zero EMI-related comm faults over 18 months of operation, and total material cost 60% lower than an all-managed-switch alternative.Case 2 – Water Treatment Plant Remote Pump Station Monitoring:A municipal utility connected a remote submersible-pump VFD and a local SCADA radio modem via a 1783-ETAP1F at the wellhead. The two copper ports linked the VFD and the radio Ethernet bridge in a linear chain, while the fiber port tied back 1.8 km to the main treatment plant over 50/125 µm multimode. The 1783-ETAP1F required no IP configuration—critical since the wellhouse had no onsite IT support—and the front-panel Link LEDs allowed the field technician to confirm physical connectivity before leaving the site. The plant reported 100% communication uptime post-installation with no lightning-induced surges transmitted back to the control center, thanks to optical isolation at the fiber boundary.
Related Product Combination Solutions
- 1783-ETAP – All-copper 3-port EtherNet/IP Tap (no fiber); use the 1783-ETAP1F when fiber is needed or the 1783-ETAP when pure copper DLR insertion suffices.
- 1783-ETAP2F – 2× copper + 1× single-mode fiber (100Base-FX LC); pairs with the 1783-ETAP1F at opposite ends of a long-haul single-mode link (where the ETAP1F’s multimode reach is insufficient).
- 1783-SFP100FX – 100Base-FX SFP transceiver (multimode); not used directly in the ETAP1F (has fixed transceiver) but referenced when migrating to a Stratix managed switch such as 1783-HMS series for the same fiber plant segment.
- 1756-EN2T / 1756-EN3T – ControlLogix EtherNet/IP communication modules; the 1783-ETAP1F typically places single-port devices into the same EtherNet/IP network supervised by these adapters.
- 20F-ENETR / 25B-ENETR – PowerFlex 520 / 750 series embedded EtherNet/IP option cards; common single-port devices connected via the 1783-ETAP1F copper ports into a DLR.
- 1769-AENTR – Compact I/O EtherNet/IP adapter; another typical single-port node inserted into a DLR using the 1783-ETAP1F.
- 1783-DNPS – DIN rail mounting bracket kit (some regions ship with the ETAP1F, some require separate order); ensures secure rail mounting of the 1783-ETAP1F in the panel.
