The Allen-Bradley 1734-AENTR is a highly versatile, compact EtherNet/IP Network Adaptor module designed for the POINT I/O system. It serves as the communication gateway, connecting a bank of POINT I/O modules to a standard Ethernet network. The “Dual-Port” feature provides integrated network switch functionality, allowing for linear (daisy-chain) network topologies without the need for external switches. This module is a cornerstone for building distributed, modular I/O solutions in industrial automation applications.
Key Features & Benefits
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Dual-Port Ethernet Switch:
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Benefit: Enables daisy-chaining of multiple devices, reducing network infrastructure costs, cabling, and panel space by eliminating the need for external Ethernet switches at each node.
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EtherNet/IP Communication:
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Benefit: Seamlessly integrates into Allen-Bradley’s integrated architecture system using a standard, open network protocol. Allows for data exchange, configuration, and diagnostics with programmable controllers like CompactLogix and ControlLogix.
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POINTBus Expansion:
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Benefit: The module connects to the right-hand side to form a POINTBus, allowing you to add up to 16 (8 recommended for high-density modules due to power budget) various digital, analog, and specialty I/O modules in any combination to a single adaptor.
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Compact Form Factor:
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Benefit: The 1734 POINT I/O system is designed for high-density installations where panel space is limited. Each module is only 12mm wide.
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Simple Integration with Rockwell Software:
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Benefit: Uses a standard electronic data sheet (EDS) file for easy commissioning in RSLogix 5000 / Studio 5000 environments. The module supports explicit messaging for configuration and implicit (I/O) messaging for real-time data transfer.
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Adapter Module Functionality:
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Benefit: Operates as an Adapter in a EtherNet/IP scanner/adapter model. This means it listens for commands from a master controller (e.g., a CompactLogix processor) and manages the I/O data for all the modules on its local POINTBus.
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Robust Design:
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Benefit: Built for industrial environments with an operating temperature range of -20°C to 60°C (-4°F to 140°F) and certified for use in Class I, Division 2 hazardous locations.
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Technical Specifications
| Category | Specification |
|---|---|
| Manufacturer / Brand | Allen-Bradley (Rockwell Automation) |
| Product Type | Network Communication Adaptor Module |
| Catalog Number | 1734-AENTR |
| Revision | A01 (Note: This is an earlier hardware revision. Newer units may be available.) |
| Network Protocol | EtherNet/IP (CIP) |
| Ports | Two (2) 10/100 Mbps RJ45 Auto-MDIX Ethernet Ports |
| Key Feature | Embedded Dual-Port Switch for Daisy-Chaining |
| Backplane Connection | POINTBus (to right-side I/O modules) |
| Max. Number of Modules | 16 (subject to power supply capacity) |
| Power Supply | Requires a 1734 Power Supply (e.g., -PS, -FPD, -EP24DC) |
| Isolation | 1500V AC RMS (POINTBus to Network) |
| Status Indicators | Network Status (OK, Network, Mod/Net), Link (for each port), POINTBus OK |
| Operating Temperature | -20°C to 60°C (-4°F to 140°F) |

















