1768-CNB CompactLogix ControlNet Interface Module
The 1768-CNB is a ControlNet communication module for the CompactLogix platform. It brings deterministic ControlNet networking into a single-slot module. Engineers use it for media redundancy, high-speed data transfer, and redundant controller systems. The module fits any slot from 1 to 4 on a 1768 ControlLogix chassis. It handles up to 48 connections and 99 nodes. Two connectors serve field wiring: one BNC for non-redundant media and one shielded NAP RJ45. The 1768-CNB runs at 5 Mbps with 30V isolation. Thermal design keeps dissipation at 17.5 BTU/hr. This module suits panel builders who need stable ControlNet links without adding a separate communication chassis.
Technical Data at a Glance
- Device type: ControlNet communication interface
- Max connections: 48
- Max nodes: 99
- Slot width: 1 slot, installs in slots 1–4
- Backplane current: 1 A at 5V
- Power consumption: 5.14 W
- Thermal dissipation: 17.5 BTU/hr
- Network rate: 5 Mbps
- Isolation: 30V
- Operating temperature: 0–60°C
- Storage temperature: -40–85°C
- Humidity: 5–95% non-condensing
- Vibration: 5 g at 10–500 Hz
- Operating shock: 30 g; non-operating 50 g
- Dimensions: 132 × 56.7 × 105.1 mm
- Weight: 0.260 kg
Oiltech Controls Review: What This Module Delivers
- Single-slot footprint saves chassis space in dense CompactLogix racks.
- 5 Mbps ControlNet rate supports deterministic I/O and inter-controller messaging.
- 48 connections and 99 nodes cover medium-scale control networks.
- BNC plus NAP RJ45 connectors simplify media planning for non-redundant and redundant layouts.
- 30V isolation guards backplane electronics from field transients.
- DIN rail or panel mount options fit both retrofit and new panel builds.
- Certified to c-UL-us, CE, C-Tick, CI for global deployments.
Oiltech Controls’s Insight: Compatible Equipment
- 1768 CompactLogix chassis with free slot 1–4
- 1768-L43 / L45 CompactLogix controllers
- ControlNet networks with BNC or NAP media runs
- Systems needing media redundancy or intrinsic safety segments
- Redundant controller architectures and high-speed data exchange nodes
- Legacy ControlNet panels migrating to CompactLogix hardware
Installation Notes
- Mount on DIN rail or panel, or seat directly in a 1768 ControlLogix chassis.
- Verify 1 A at 5V backplane budget before adding the module.
- Use the BNC port for non-redundant media; reserve NAP RJ45 for shielded runs.
- Keep ambient temperature between 0 and 60°C.
- Plan network node count below the 99-node limit.
- Check 30V isolation grounding practice during wiring.
Dispatch, Warranty and Shipping
- 12-month warranty from Oiltech Controls Limited.
- 24–28 hour dispatch after order confirmation.
- Shipping by FedEx, UPS, DHL.
- Technical verification before shipment.
- Contact: info@oiltechcontrols.com or +86 158 8020 0923.
FAQ
Q: Which CompactLogix chassis accept the 1768-CNB?
A: The module fits any slot from 1 to 4 on a 1768 ControlLogix chassis. Check backplane current first. The module draws 1 A at 5V.
Q: How many ControlNet nodes and connections can I run?
A: The 1768-CNB supports 99 nodes and 48 connections. Keep total network traffic within the 5 Mbps ControlNet rate. Overloading connections slows messaging.
Q: What is the difference between the BNC and NAP ports?
A: The BNC port serves non-redundant ControlNet media. The NAP RJ45 is a shielded 8-pin connector. Use NAP when your panel uses shielded RJ45 media runs.
Q: My legacy ControlNet panel needs a swap. What should I check before buying?
A: Confirm chassis slot availability, backplane current headroom, and node count. Verify connector type (BNC or NAP) matches existing cabling. Check certifications against site requirements.
Q: Is the 1768-CNB suitable for redundant controller systems?
A: Yes. The module supports redundant controller architectures and media redundancy. Plan cabling for both media paths. Confirm node limits stay under 99 across the full network.
Contact: info@oiltechcontrols.com | +86 158 8020 0923
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