Overview
The 1756-CN2RXT is a ControlLogix ControlNet redundant communication interface module with dual independent ControlNet channels, automatic failover of the primary and backup links, and deterministic, real-time ControlNet bus.
Specification
| Item | Specification |
|---|---|
| Communication Protocol | ControlNet (CIP) |
| Communication Speed | 5 Mbps (standard) |
| Physical Interface | 2 × BNC (coaxial cable) |
| Redundancy | Dual media redundancy (A/B links) |
| Switchover Time | < 100 ms (bumpless switchover) |
| Max Nodes | 99 nodes (ControlNet network) |
| Logix Connections | 128 connections |
| Backplane Power Consumption | 6.6 W @ 5.1 V DC |
| Operating Temperature | -25°C ~ +70°C (XT extended temperature) |
| Isolation | 1500 V AC isolation between channels |
| Mounting | 1756 chassis, single slot |
| Certifications | UL, cUL, CE, ATEX |
FAQ:
1.How many rack slots does the 1756-CN2RXT occupy?
The 1756-CN2RXT occupies only one standard slot in a ControlLogix rack.
2.How many ControlNet nodes does the 1756-CN2RXT support?
The ControlNet network where 1756-CN2RXT is located supports a maximum of 99 nodes.
3.What is the difference between 1756-CN2RXT and 1756-CN2R?
| Item | 1756‑CN2RXT | 1756‑CN2R |
|---|---|---|
| Product Series | ControlLogix‑XT (Extreme Environment) | Standard ControlLogix |
| Operating Temperature | -25°C ~ +70°C (Extended Temperature) | 0°C ~ +60°C (Standard) |
| Environmental Resistance | Vibration & interference resistant, for harsh / outdoor / high humidity environments | For general indoor industrial environments |
| Redundancy | Dual media redundancy (A/B links) | Dual media redundancy (A/B links) |
| Physical Size | 1 chassis slot, 6.6 W | 1 chassis slot, 6.6 W |
| Typical Applications | Oil & gas, chemical, power, mining, harsh conditions | General factory automation, process control |
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