Product Details
Product Description
The 1788-CN2DN is a high-performance communication interface designed to bridge the gap between ControlNet and DeviceNet networks. This linking device enables seamless data exchange and high-speed control coordination across heterogeneous network architectures. It functions as a gateway, allowing a master controller on a ControlNet segment to monitor and control I/O devices residing on a DeviceNet subnet without requiring a dedicated PC-based scanner.
As an open-style module, the 1788-CN2DN is engineered for panel-mount or DIN-rail integration within protected industrial enclosures. It features robust galvanic isolation between all ports to ensure signal integrity and protect sensitive logic-side components from field-side electrical transients.
Technical Specifications
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Manufacturer: Allen-Bradley (Rockwell Automation)
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Model Designation: 1788-CN2DN
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Network Interface A: ControlNet (BNC Coaxial RG-6 connection)
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Network Interface B: DeviceNet (5-pin linear header)
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Input Power: 24V DC nominal (Range: 18-32V DC)
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Current Consumption: 500 mA (External 24V Input) / 90 mA (from DeviceNet network)
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Isolation Voltage: 30V continuous (Basic Insulation); Factory tested at 720V DC for 60 seconds
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Wiring Specifications: 0.25 to 2.5 mm² (22 to 14 AWG) copper wire for power; 75°C (167°F) rating minimum
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Communication Wiring: Category 2 (Comms) and Category 3 (Power)
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Dimensions (H x W x D): 120 x 200 x 87 mm (4.7 x 7.9 x 3.4 in)
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Thermal Rating: T4A (North American) / T4 (IEC)
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Enclosure Rating: IP00 (Open-style)
Application and Network Integration
This linking device is primarily utilized in large-scale manufacturing facilities where a ControlNet backbone manages primary PLC communications while localized DeviceNet segments handle discrete sensors, motor starters, and actuators. By utilizing the 1788-CN2DN, engineers can reduce the complexity of their network topology and optimize bandwidth on the primary ControlNet trunk.
Engineering FAQ
How does the 1788-CN2DN handle DeviceNet power?The device requires power from both the external 24V DC input and the DeviceNet network itself. The DeviceNet side draws approximately 90 mA to power the transceiver circuits, ensuring network isolation is maintained.
Does this device support redundant ControlNet media?The 1788-CN2DN provides standard ControlNet connectivity. For mission-critical applications requiring physical media redundancy, verify if your network configuration supports a single-access linking device or if secondary modules are required for the specific segment.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Preventing Spurious Trips in Emergency Stop Systems: A Technical Guide
In industrial automation, the Emergency Stop (E-Stop) pushbutton is the ultimate safety line. However, relying on a single Normally-Closed (NC) contact can sometimes lead to unexpected spurious trips. As a control systems engineer, I have seen these nuisance trips halt entire production lines, causing significant downtime. Understanding why these components fail and how to implement robust architecture is essential for any reliable DCS or PLC-based safety system.
Sequencing Induction Motor Control with PLC Logic: Best Practices
In modern industrial automation, controlling a group of induction motors requires precision and safety. Uncontrolled simultaneous startup of multiple large motors often causes significant voltage dips, potentially triggering protective trips. Therefore, implementing a sequential startup and shutdown strategy is essential. This approach minimizes inrush current and ensures the system operates within established power constraints. A robust PLC program serves as the ideal engine for orchestrating these sequences.
Mastering PLC Programming: Best Practices for Robust Industrial Automation
Writing clean PLC code requires discipline, especially regarding memory management. Avoid overusing SET and RESET instructions, as they often complicate debugging. If multiple rungs control the same bit, troubleshooting becomes a nightmare. Instead, focus on energizing a bit in only one location. If your logic requires complex conditions, use branches within a single rung. This approach keeps your code readable, maintainable, and significantly easier to audit during downtime.