Allen Bradley 1756-CNB
Discontinued by manufacturer, communication module, controllogix, controlnet interface, single channel, 24VDC, (engineering replacement: 1756-cn2)
This Allen Bradley 1756-CNB is supplied brand new by PartLogic for machine control, process automation, industrial communication, equipment maintenance and replacement applications. It forms part of our Industrial automation > Plc controllers > Io modules > Communication > Controllogix range and is referenced internally as PartLogic SKU PL26805596138.
Before ordering, please confirm the manufacturer part number, product specifications and compatibility with your existing equipment. If you are replacing a failed, obsolete or hard-to-find part, contact PartLogic and we can help check suitability or source related components.
| Model number | 1756-CNB |
| Communication | ControlNet |
| Ports | 1 ControlNet BNC, 1 NAP RJ45 |
| Transmission rate | 5000 kbps |
| Connections supported, max | 64 |
| Logix communication connections range | 40...48 |
| Number of nodes, max | 99 |
| Slot width | 1 |
| Power dissipation | 5.1 W |
| Thermal dissipation | 17.4 BTU/h |
| Input current | 970 mA @ 5.1 VDC, 1.7 mA @ 24 VDC |
| Operating temperature | 0 to 60 °C |
| Storage temperature | -40 to 85 °C |
| Surrounding air temperature, max | 60 °C |
| Relative humidity | 5...95% noncondensing |
| Emissions | CISPR 11 Class A |
| Vibration | 2 G @ 10...500 Hz |
| Shock | Operating: 30 G, Non operating: 50 G |
| ESD immunity | 6 kV contact, 8 kV air |
| EFT/B immunity | ±3 kV @ 5 kHz on ControlNet ports |
| Conducted RF immunity | 10 V rms, 1 kHz 80% AM, 150 kHz...80 MHz |
| Radiated RF immunity | 10 V/m 80...2000 MHz; 3 V/m 2000...2700 MHz |
| Surge transient immunity | ±2 kV line-earth (CM) on ControlNet ports |
| Isolation voltage | 30 V continuous, basic insulation, ControlNet to backplane |
| Enclosure type rating | Open-style |
| ControlNet cable | 1786-RG6 quad shield RG6 coaxial |
| NAP cable | 1786-CP |
| Weight, approx | 0.26 kg (0.56 lb) |
| Module location | Chassis based, any slot |
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