1734-AENT connects an Allen-Bradley POINT I/O station to EtherNet/IP through one RJ45 network port. The adapter manages communication between the network controller and the POINTBus backplane while supplying backplane power to the attached I/O modules.

The single-port architecture is intended for star or tree Ethernet layouts. A complete node can contain up to sixty-three POINT I/O modules, with expansion power supplies added when the module load exceeds the available POINTBus current.

• Communicates at 10 or 100 Mbit/s with half- or full-duplex operation.
• Supports direct, rack-optimized and enhanced rack-optimized EtherNet/IP connections.
• Provides up to 1.0 A at 5 V DC to the POINTBus backplane.
• Supports a maximum POINT I/O node size of sixty-three modules.
• Uses one RJ45 Category 5 network connector for star or tree topology.
• Installs on grounded EN 50022 35 x 7.5 mm DIN rail.

Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Product Family	POINT I/O
Catalog Number	1734-AENT
Network	EtherNet/IP
Ethernet Ports	1 RJ45 port
Communication Rate	10/100 Mbit/s, half or full duplex
Supported Topologies	Star and tree
Maximum I/O Modules per Node	63
POINTBus Output	5 V DC at maximum 1.0 A
Field Power Supply	10 to 28.8 V DC at 10 A
Module Input	1000 mA at 10 to 28.8 V DC
Maximum Power Consumption	10.4 W at 28.8 V DC
Maximum Power Dissipation	5.2 W at 28.8 V DC
Mounting	DIN rail

• Acts as the head adapter for a POINT I/O station connected to a Logix-class EtherNet/IP architecture.
• Requires an external Ethernet switch when multiple network devices must be connected in a star or tree arrangement.
• Supports expansion power modules such as 1734-EP24DC or 1734-EPAC when the node needs additional backplane current or a new field-power segment.
• Must be configured with the correct IP address, chassis size, electronic keying and I/O connection method.
• Is not a direct two-port ring replacement for 1734-AENTR; the topology and port arrangement differ.

• Distributed POINT I/O stations connected through a plant Ethernet switch.
• Compact machine cells using a star-topology EtherNet/IP network.
• Tree networks where each remote station needs one adapter connection.
• Retrofit of an existing single-port 1734-AENT node after the module order is documented.
• Remote I/O panels that require rack-optimized or direct Logix connections.

How many Ethernet ports does 1734-AENT provide?

It has one RJ45 EtherNet/IP port.

Which network layouts suit the single-port adapter?

Rockwell Automation lists star and tree topologies for 1734-AENT.

How many POINT I/O modules can one node contain?

A node can include up to sixty-three POINT I/O modules, subject to current and connection planning.

When is an expansion power supply required?

Add one when the attached module load exceeds available POINTBus current or when a new field-power segment is needed.

Can 1734-AENT form a Device Level Ring by itself?

No. Its single-port design is not the dual-port embedded-switch arrangement used for linear or ring networks.

What should be recorded before replacement?

Record the IP settings, chassis size, module order, connection type, keying and backplane-current calculation.