Overview
The Allen-Bradley 1738-ADN12 is a DeviceNet network adapter that serves as a slave device on DeviceNet networks, enabling seamless integration of ArmorPoint I/O modules with Rockwell Automation PLC and control systems. The adapter converts DeviceNet master scanner traffic into backplane communication for local I/O modules, supporting cyclic and Change of State (COS) communication modes.
Key Features
- Compact M12 quick-disconnect connector for rapid field installation and replacement
- 1Mbaud default DeviceNet communication with configurable baud rate settings
- Built-in reverse polarity protection for 11–25 VDC DeviceNet input
- Integrated POINTBus backplane power supply supporting up to 17 I/O modules
- IP67 sealed enclosure rated for harsh industrial and outdoor environments
- LED diagnostic indicators for module, backplane, and transmit/receive status
Technical Specifications
- Input Voltage: 11–25 VDC (with reverse polarity protection)
- Backplane Power Supply: 24 VDC nominal, 10 A maximum field power
- Maximum Power Dissipation: 2.8 W @ 28.8 VDC
- Thermal Dissipation: 935 BTU/hr @ 28.8 VDC
- Communication: DeviceNet 1 Mbaud default
- Connector Type: M12 A-code micro connector (male in, female out for 1738-ADN12)
- Operating Temperature: −20 to +60 °C (−4 to +140 °F)
- Storage Temperature: −40 to +85 °C (−40 to +185 °F)
- Vibration: 5 g @ 10–500 Hz; Shock: 30 g
- Enclosure Rating: IP67 (IP65/66/67 when marked)
- Certifications: CE, C-Tick, CCC, GOST, Marine, Registro Italiano Navale
- Mounting: On-machine or panel-mount
- Series: ArmorPoint I/O, Bulletin 1738
Typical Applications
- Distributed I/O control on manufacturing equipment requiring DeviceNet networking
- On-machine data acquisition and real-time process control in harsh environments
- Integration of sealed, washdown-rated I/O modules in food & beverage, automotive, and pharmaceutical systems
- Remote DeviceNet subnet extension with secondary I/O modules
Compatibility & Replacements
The 1738-ADN12 is part of the ArmorPoint DeviceNet adapter family, which includes the 1738-ADN18, 1738-ADN18P, and 1738-ADNX. All adapters require configuration via RSNetWorx for DeviceNet software and can be added to a DeviceNet master scanner’s scanlist using RSLogix or Studio 5000. The adapter is compatible with all standard ArmorPoint I/O modules (input, output, and specialty modules) connected to its POINTBus backplane. Configuration and firmware downloads are available from the Rockwell Automation Product Compatibility and Download Center (PCDC). Note: This product has been discontinued by Rockwell Automation effective December 31, 2025, with no planned direct replacement. Existing systems remain supported.
