The Allen-Bradley 1734-AENTR, also cataloged as the 1734AENTR Network Adapter Module, operates as a dedicated hardware component for bridging Ethernet/IP communications to Point I/O rack modules within industrial automation architectures.

Catalog Nomenclature and Mapping Matrix

• 1734-AENTR: Base catalog number for the 2-port EtherNet/IP communication adapter
• 1734AENTR: Alternative manufacturer identification string without separator hyphens

Hardware Specifications

EtherNet/IP Deterministic Networks and Bus Architecture

The unit relies on deterministic EtherNet/IP networks to manage data exchanges between connected I/O nodes and central controllers across star, tree, linear, or device-level ring topologies. Backplane bus communication velocity coordinates module execution limits up to a 63-module capacity on the internal PointBus. I/O density scaling allows seamless expansion without violating backplane current loading limits or inducing protocol conversion latencies. Firmware flash compatibility is managed through system software tools to preserve operational baseline stability across controller updates.

Ordering Information

• 1 x Allen-Bradley 1734-AENTR Network Adapter Module
• 1 x Removable Marker Carrier
• 1 x Hardware Data Sheet Reference

Physical Installation Instructions

• DIN Rail Mounting Mechanics
  • Secure the adapter module firmly onto a standard 35 mm industrial DIN rail inside an appropriate protective enclosure.
  • Align the module slide latch and push down until it locks securely into place on the rail structure.
• Network and Power Cabling
  • Connect shielded twisted-pair Ethernet cables into the RJ-45 communication ports supporting ring or linear topologies.
  • Terminate the external 24 VDC power supply lines to the removable terminal block while respecting polarity limits.

Frequently Asked Technical Inquiries

• Q: What is the maximum number of I/O modules supported by this adapter?
• A: The adapter supports a maximum capacity of 63 expansion modules connected along the PointBus.
• Q: What communication rates do the Ethernet ports support?
• A: The ports support 10/100 Mbits/s communication speeds in both half and full-duplex modes.
• Q: How is the IP address assigned to the communication adapter?
• A: IP configuration is managed using BOOTP/DHCP utilities or physical thumbwheel switches located on the device.
• Q: Does the hardware support ring network topologies?
• A: Yes, the dual Ethernet ports support Device Level Ring (DLR) topologies for network media redundancy.
• Q: What happens if an attached I/O module fails to respond to a request?
• A: The adapter generates an error code indicating a communication time-out back to the controller.
• Q: What is the maximum inrush current rating during startup?
• A: The maximum inrush current reaches 6 A for a duration of 10 milliseconds.
• Q: Is hot-swapping permitted for expansion modules on the active PointBus?
• A: Expansion modules can be replaced under power if supported by system architecture, but rack power rules apply.
• Q: What is the maximum field side power rating supplied through the adapter?
• A: The field side power is rated for a maximum of 24 VDC at 400 mA.