Allen-Bradley 1738-ADN12 ArmorPOINT I/O DeviceNet Adapter

Configured for high-speed fieldbus communications in industrial control networks, the Allen-Bradley 1738-ADN12 (1738-ADN DeviceNet Adapter Module) provides direct physical execution of network-to-backplane I/O signal translation.

Hardware Specifications

EtherNet/IP Deterministic Networks and Firmware Flash Compatibility

• DeviceNet and Network Determinism: Translates high-speed serial fieldbus traffic into local backplane bus commands, maintaining deterministic processing of I/O data streams across the ArmorPOINT architecture.
• I/O Density Scaling: Interfaces with expansion I/O modules on the backplane, accommodating high-density sensor and actuator arrangements without compromising transmission cycle speeds.
• Firmware Flash Compatibility: Supports non-volatile firmware updating across the fieldbus interface to preserve protocol timing, execution stability, and diagnostic functionality.

Frequently Asked Questions

Q: What network connector style is integrated into the 1738-ADN12 adapter?

A: The module utilizes an M12 micro network connector designed for standard industrial fieldbus cabling.

Q: What environmental ingress protection rating does the 1738-ADN12 hold?

A: The adapter features a sealed housing rated at IP69K for direct washdown and harsh environment installations.

Q: What is the backplane pass-through current capacity from the main 24 VDC supply?

A: The adapter draws 400 mA at 24 VDC to power its internal logic and provide operational bus power to adjacent I/O modules.

Field Installation Guidelines

• Mount the sealed module directly to the machine structure or mounting plate using specified fastening hardware to prevent mechanical stress.
• Connect the DeviceNet fieldbus interface using an industrial M12 micro connector. Ensure the threaded coupling ring is hand-tightened and torqued according to M12 interface standards to guarantee IP69K ingress protection.
• Route network and 24 VDC power cables in dedicated conduits, separated from high-voltage AC lines to mitigate electromagnetic interference.
• Ground the cable shield at a single termination point per DeviceNet wiring guidelines to eliminate ground loops.