Description
1788-CN2DN A-B ControlNet to DeviceNet Linking Device
Product Dimensions：
Product Description (Detailed Explanation)
The 1788-CN2DN is a specialized communication interface that functions as a “bridge” or “translator.” In a typical architecture, a ControlLogix or PLC-5 controller resides on the ControlNet (the higher-level, deterministic network) and needs to control distributed sensors, motor starters, or valves located on a DeviceNet (the lower-level, device bus).
The 1788-CN2DN maps the DeviceNet I/O data directly into the ControlNet memory map. This allows the main controller to “see” the DeviceNet components as if they were local I/O, without requiring a dedicated DeviceNet scanner card in the main PLC rack.
Product Parameters (Technical Specifications)
| Parameter Category | Specification |
| Network Side A | ControlNet (1.5 Mbps, RG-6 Coax) |
| Network Side B | DeviceNet (125k, 250k, 500k bps) |
| Input Voltage | 24V DC (via DeviceNet power or external source) |
| Current Draw | 200 mA @ 24V DC |
| DeviceNet Capacity | Up to 63 Slaves |
| Data Throughput | Up to 480 bytes of Input / 480 bytes of Output |
| Mounting | DIN-rail or Panel Mount |
| Indicators | Module, ControlNet, and DeviceNet Status LEDs |
| Operating Temp. | 0°C to 60°C (32°F to 140°F) |
Product Advantages (Key Benefits)
-
Slot Savings: Eliminates the need for a local DeviceNet scanner module (like the 1756-DNB) in the PLC chassis, freeing up expensive rack space.
-
Network Consolidation: Allows for a centralized ControlNet backbone while utilizing low-cost DeviceNet cabling for field-level instrumentation.
-
Seamless Integration: Fully compatible with RSNetWorx for ControlNet and RSNetWorx for DeviceNet, making configuration and diagnostic tasks consistent with standard Rockwell environments.
-
Deterministic Performance: Maintains the time-critical nature of ControlNet while managing the asynchronous data traffic of DeviceNet.
-
Bridge Functionality: Supports “routing,” enabling a PC on ControlNet to upload/download programs to devices on DeviceNet through the 1788-CN2DN.
Precautions (Important Notes)
-
Power Requirements: The device requires 24V DC. Ensure the DeviceNet power supply has sufficient current capacity to power both the linking device and the other nodes on the segment.
-
Termination: Standard network termination rules apply. Ensure 75-ohm terminators are on the ControlNet ends and 121-ohm resistors are on the DeviceNet ends.
-
Configuration Software: You must use RSNetWorx to schedule the ControlNet network and map the DeviceNet I/O. Without scheduling, the device will not exchange I/O data.
-
Address Conflicts: Ensure the Node Address (MAC ID) for both the ControlNet and DeviceNet sides are uniquely set and do not conflict with other existing hardware.
Product Applications (Typical Use Cases)
-
Legacy System Upgrades: Connecting existing DeviceNet motor control centers (MCCs) to a newer ControlLogix system that primarily uses ControlNet for its backbone.
-
Distributed I/O Management: Deploying small clusters of DeviceNet sensors in remote areas of a plant and backhauling that data over a long-distance ControlNet cable.
-
Space-Constrained Racks: Applications where the PLC rack is full, but additional DeviceNet connectivity is required.
-
Hybrid Networking: Providing a gateway for high-speed diagnostic tools to “look through” the ControlNet to calibrate or troubleshoot field devices on DeviceNet.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
Please make an inquiry for more models：
| AB 1756-0B16E | AB 1756-DMD30 | AB 1756-IB32 |
| AB 1756-0F4 | AB 1756-DNB | AB 1756-IB32/A |
| AB 1756-0X8I | AB 1756-DNB/A | AB 1756-IF16 |
| AB 1756-A10 | AB 1756-DNB/A/B | AB 1756-IF16/A |
| AB 1756-A13 | AB 1756-DNB/B | AB 1756-IF161 |
| AB 1756-A17 | AB 1756-DNB/C1756-DNB/D | AB 1756-IF16H |
| AB 1756-A4 | AB 1756-DNB/D | AB 1756-IF4FXOF2F |
| AB 1756-A7 | AB 1756-DNB1 | AB 1756-IF6CIS |
| AB 1756-BA11 | AB 1756-EN2T | AB 1756-IF6I |
| AB 1756-BA2 | AB 1756-EN2T/C | AB 1756-IF8 |
| AB 1756-CFM | AB 1756-EN2T/D | AB 1756-IF8H |
| AB 1756-CN2 | AB 1756-EN2TR | AB 1756-IF8U |
| AB 1756-CN2/B | AB 1756-EN2TR/B | AB 1756-IG16 |
| AB 1756-CN21 | AB 1756-EN3TR | AB 1756-IH16I |
| AB 1756-CN2R | AB 1756-ENBT | AB 1756-IM16I |
| AB 1756-CN2R/B | AB 1756-ENBT/A | AB 1756-IM16I1203-CN1 |
| AB 1756-CNB | AB 1756-ENET | AB 1756-IN16 |
| AB 1756-CNB/A/B/C/D | AB 1756-EWEB | AB 1756-IR6I |
| AB 1756-CNB/D | AB 1756-HSC | AB 1756-IRT8I |
| AB 1756-CNB/E | AB 1756-HSC1 | AB 1756-IT6I |
| AB 1756-CNBR | AB 1756-HYD02 | AB 1756-IT6I2 |
| AB 1756-CNBR/A/D | AB 1756-IA16/A | AB 1756-IV16 |
| AB 1756-CNBR/D | AB 1756-IA32 | AB 1756-IV32 |
| AB 1756-CNBR/E | AB 1756-IB16 | AB 1756-L1M1 |
| AB 1756-CPR2 | AB 1756-IB16/A | AB 1756-L35E |
| AB 1756-DHRIO | AB 1756-IB16D | AB 1756-L55M12 |
| AB 1756-DHRIO/C | AB 1756-IB16I | AB 1756L55M13 |
| AB 1756-DHRIO/D | AB 1756-IB16ISOE | AB 1756-L55M13 |
| AB 1756-DHRIO/E | AB 1756-IB16SOE | AB 1756-L55M14 |
| AB 1756L55M22 | AB 1756-L55M16 | AB 1756L55M16 |
| AB 1756-L55M23 | AB 1756L55M23 | AB 1756-L55M22 |
