Allen-Bradley 1794-ADNK DeviceNet Adapter Module

The 1794-ADNK is a DeviceNet adapter module manufactured by Allen-Bradley for the FLEX I/O platform. It establishes a high-speed communication bridge between up to eight FLEX I/O modules and a DeviceNet industrial network. Featuring a conformal coating on its internal electronics, this 24 VDC powered unit protects against harsh environment contaminants in distributed control applications.

Network Gateway and Module Management

The module manages data exchange across the Flexbus backplane, organizing input data from connected I/O blocks into DeviceNet message frames and distributing incoming control commands. It automatically manages module slot addressing, enabling fast data throughput for process automation and discrete machinery control.

Environmental Protection and Power

Designed with conformal coating, the module resists moisture, chemical vapor, and airborne particulate accumulation in demanding industrial settings. It requires an external 24 VDC power supply to energize its internal logic circuitry and deliver backplane power to adjacent terminal bases.

Frequently Asked Questions

Q: What does the "K" suffix represent in the 1794-ADNK part number? A: The "K" suffix designates a conformal-coated circuit board assembly, providing enhanced protection against airborne contaminants, humidity, and corrosive atmosphere exposure.

Q: How many I/O modules can the 1794-ADNK adapter manage? A: It supports backplane expansion for up to 8 individual FLEX I/O modules mounted on compatible terminal bases.