Buyer’s Guide to the 1769-ADN/B DeviceNet Adapter
The Allen-Bradley 1769-ADN/B is a DeviceNet adapter module from the CompactLogix / Bulletin 1769 family. It lets a 1769 Compact I/O rack operate as a slave node on a DeviceNet network, bridging local I/O to a scanner such as a 1756-DNB or an SLC/PLC-5 master. If you run distributed packaging, material handling, or automotive assembly lines, this module keeps your existing I/O rack talking to the network without a full platform migration.
Note that Rockwell Automation discontinued this product on 2016-12-31, with no planned replacement. For plants still running CompactLogix or MicroLogix 1500 systems, sourcing tested spares is the practical path. Oil AutoTech focuses on fast-dispatch spares for oil, gas, and industrial automation, so you can keep lines running while planning a longer-term upgrade.
Key Specifications at a Glance
The 1769-ADN/B carries one DeviceNet port with auto-detect baud rates of 125/250/500 kbps. It supports up to 30 I/O nodes and moves 180 input plus 180 output words of data. Backplane current draw is 500 mA at 5V DC for Series B, and the DeviceNet supply accepts 11-25 VDC (90 mA at 24V DC). Isolation is rated 30 V continuous, with heat dissipation of 4.7 W max. The module mounts on DIN rail or panel and operates from 0 to 60 C. Power supply distance is 5 modules for Series B.
Installation and Network Integration
Mount the module on a DIN rail or panel, then lock it to adjacent 1769 modules using the tongue-and-groove design and movable bus connector. The controller distributes 5V and 24V DC across the bus; a 1769 power supply module supports up to eight I/O modules per side. Keep the power supply distance limit of 5 modules in mind when planning the rack layout.
For DeviceNet wiring, confirm cable type, trunk length, and termination with your supplier before installation. Multi-status LEDs for module, network, and I/O diagnostics simplify commissioning and fault finding. If you are migrating toward EtherNet/IP, note that 1768 controllers accept add-on modules such as the 1768-ENBT; a gateway approach may suit newer architectures.
Maintenance and Lifecycle Planning
Because the 1769-ADN/B is discontinued, treat every unit as a critical spare. Inspect connections and LED status periodically, and keep the module within the 0-60 C operating range. For safety-related or high-availability lines, follow your site’s maintenance procedures and the manufacturer’s documentation.
Please verify current lifecycle status and availability with Oil AutoTech before ordering. Contact Oil AutoTech today for pricing and availability.
