Description
Application Scenarios
A large automotive assembly plant was experiencing intermittent communication dropouts between their central control room and a remote robotic welding cell located 500 meters away. The copper Ethernet link was susceptible to EMI from heavy welding currents, causing unplanned stoppages and lost production. By deploying the 1783-ETAP2F/A at the remote cell, they converted their single-port robot controller into a dual-port DLR-capable node. The fiber-optic links replaced the problematic copper run, eliminating EMI issues and extending the network reach. The plant’s network administrator also utilized the tap’s passive monitoring capability to capture and analyze network traffic during peak production, identifying a separate broadcast storm issue that was slowing down the entire line -3. This case highlights the 1783-ETAP2F/A‘s dual value: as a topology enabler and a powerful diagnostic tool.
In a water treatment facility, the 1783-ETAP2F/A was used to connect a critical PLC located in a high-humidity pump station to the plant’s DLR network ring. The module’s rugged industrial design and wide operating temperature range (-25°C to +60°C) ensured reliable operation in the challenging environment -7-14. The fiber ports provided electrical isolation, protecting the sensitive control network from potential ground loops and lightning-induced surges common in outdoor installations.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1783-ETAP2F/A (1783-ETAP2F Series A) |
| Manufacturer | Allen‑Bradley (Rockwell Automation) |
| Product Category | Industrial EtherNet/IP Tap / Embedded Switch Module |
| Copper Ports | 1 x 10/100 Mbps RJ45 (Auto-negotiation, Auto-MDI/MDI-X) |
| Fiber Ports | 2 x 100 Mbps (100Base-FX), Multimode, LC connectors -7 |
| Topology Support | Linear, Star, Device Level Ring (DLR) -1-5 |
| Power Supply | 24V DC nominal (20.4…27.6V DC) -14 |
| Power Consumption | 6.24 W max; 260 mA @ 24V DC -2-4-14 |
| Operating Temperature | -25°C to +60°C (-13°F to 140°F) -7-14 |
| Mounting | DIN rail (top hat rail) or panel mount -7-10 |
| Certifications | UL, CE, ATEX, CSA, IECEx; Class I Div. 2 hazardous location -7 |
| Diagnostic Interface | Web interface; DIP switches for configuration; Status LEDs -7 |
Technical Principles and Innovative Values
Innovation Point 1: Embedded Switch Technology with DLR Support
The 1783-ETAP2F/A integrates an embedded Ethernet switch directly into the tap hardware, eliminating the need for a separate standalone switch in many applications -1. This technology enables Device Level Ring (DLR) topology with < 3 ms fault recovery time, ensuring minimal production disruption in the event of a single cable break -1. The module converts single-port devices into dual-port DLR-capable nodes, simplifying network design and reducing hardware costs -5.
Innovation Point 2: Transparent Network Monitoring Capability
Unlike active network devices that introduce latency or processing overhead, the 1783-ETAP2F/A provides a passive, zero-latency replication of network traffic to designated monitoring ports -3. Network administrators can connect protocol analyzers (e.g., Wireshark), industrial intrusion detection systems (IDS), or network performance monitors (NPM) to the tap without affecting the production network’s communication integrity. This is a significant advantage over SPAN (port mirroring) on managed switches, which can consume CPU resources and potentially drop frames during high traffic loads.
Innovation Point 3: Hybrid Copper/Fiber Connectivity with Electrical Isolation
The 1783-ETAP2F/A combines copper and fiber ports, enabling network architects to bridge the gap between legacy copper devices and modern fiber-based infrastructure. The fiber ports provide inherent electrical isolation and immunity to EMI, making the module ideal for installations spanning long distances or running through high-interference environments such as power generation plants, steel mills, and mining operations -7.
Innovation Point 4: Industrial-Grade Reliability and Diagnostics
Designed for harsh industrial environments, the 1783-ETAP2F/A operates reliably across a wide temperature range and carries multiple hazardous location certifications -7. The module’s robust diagnostic features include comprehensive status LEDs, DIP switches for configuration, and a web-based interface for detailed diagnostics and IP configuration, simplifying troubleshooting and reducing mean time to repair (MTTR) -7-8.
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