A-B 1734-ADN DeviceNet Adapter Module

A-B 1734-ADN DeviceNet Adapter Module

The Allen-Bradley 1734-ADN is a POINT I/O DeviceNet network adapter module used to connect a POINT I/O system to a DeviceNet industrial network.

Product Information

• Brand: Allen-Bradley (Rockwell Automation)
• Series: POINT I/O 1734
• Part Number: 1734-ADN
• Type: DeviceNet Network Adapter (I/O Communication Module)
• Function: Connects POINT I/O modules to DeviceNet master controller

Key Technical Specifications

• Communication Protocol: DeviceNet
• Supply Voltage: 24 V DC
• DeviceNet Baud Rates: 125 / 250 / 500 kbps
• Max I/O Modules Supported: up to 63 modules per node
• Max I/O Points: up to 504 points (system dependent)
• Backplane Current: powers POINT I/O modules through internal bus
• Mounting: DIN rail, left-side start module in POINT I/O assembly

Function (Simple Explanation)

This module acts as the communication gateway:

PLC / DeviceNet master
→ 1734-ADN adapter
→ POINT I/O rack (IB, OB, analog, relay modules, etc.)

So it does not control I/O directly, but:

• Transmits data between PLC network and I/O modules
• Manages the entire POINT I/O station
• Acts as the “network head” of the rack

System Role

It is the network interface + I/O system controller, meaning:

• It is required for any POINT I/O system using DeviceNet
• Without it, all 1734 I/O modules cannot communicate with PLC

Application Areas

• Distributed I/O systems
• Factory automation networks
• Machine control systems
• Conveyor systems
• Packaging production lines
• DeviceNet-based industrial control systems

Key Features

• Connects up to 63 POINT I/O modules
• Compact DIN rail design
• Supports standard DeviceNet communication
• Integrates distributed I/O into PLC systems
• Hot-swappable POINT I/O modules (system dependent)

Precautions

• Must be used with DeviceNet master scanner/controller
• No direct control of field devices (only communication gateway)
• Requires correct network configuration (node address + baud rate)
• POINT I/O chassis size must match configuration in PLC software
• Product is end-of-life (EOL in 2026) in Rockwell lifecycle notice