Configured for DF1 full-duplex to DeviceNet protocol conversion in industrial control networks, the Allen-Bradley 1761-NET-DNI (1761NETDNI Communication Adaptor) provides direct physical/electrical bridge execution between serial-based PLCs and DeviceNet fieldbus architectures.

Product Designation and Nomenclature

The 1761-NET-DNI serves as a gateway device. It maps DF1 protocol frames to DeviceNet object models, allowing legacy MicroLogix and SLC controllers to participate in broader networked automation schemes without requiring native fieldbus capability on the controller itself.

Technical Performance Matrix

Network Determinism and Protocol Conversion

The module facilitates integration into EtherNet/IP and DeviceNet deterministic networks. It manages serial data encapsulation with minimal latency, ensuring that PLC I/O status updates and messaging requests remain within the required deterministic time windows. Firmware compatibility should be validated against the connected controller's RSLogix/Studio 5000 project file to ensure proper data packet alignment and prevent timing synchronization faults during high-density I/O traffic.

Ordering Information

• Allen-Bradley 1761-NET-DNI communication module

• DeviceNet connector (field-terminable)

• Installation documentation

• Note: Serial interconnect cables (such as 1761-CBL-PM02) are not included and must be sourced per specific controller port requirements.

Field Installation Guidelines

• Physical Placement: Mount horizontally on a standard DIN-rail to ensure adequate convective cooling within the enclosure.

• Grounding: Connect the module chassis ground terminal directly to the enclosure bus bar using a low-impedance copper strap.

• Shielding: Ensure the DeviceNet cable shield is terminated at the designated ground point to mitigate signal noise and ensure compliance with electromagnetic compatibility standards.

• Cabling: Maintain a minimum of 100 mm separation between communication cabling and high-voltage AC power conductors.

Global Logistics

• Delivery time: 2-7 days when payment finish.

• Shipment via DHL, FEDEX, or UPS.

• All modules are protected by anti-static industrial packaging to prevent discharge damage and ensure integrity during international transit.

Frequently Asked Questions

1. Can this module operate in hazardous environments?

   The 1761-NET-DNI is intended for standard industrial control panels and does not carry intrinsic safety (Ex i) ratings for direct installation in hazardous zones.

2. How is the health status of the module monitored?

   Internal status is indicated via front-panel LEDs, which report module power, communication activity, and DeviceNet network state.

3. What causes communication timeouts with this adaptor?

   Timeouts are typically caused by baud rate mismatches between the DF1 serial port and the PLC, or incorrect DeviceNet node address (MAC ID) assignment.

4. Is the firmware field-upgradeable?

   Yes, the module supports firmware updates via the serial port using standard Allen-Bradley configuration utilities.

5. What is the expected service life?

   Under specified operating temperatures (0 to 55 deg C) and non-condensing humidity levels, the hardware is designed for long-term continuous operation within standard industrial duty cycles.