Authenticity and condition
Product authenticity and actual condition, including new condition when offered as new, are checked before final approval and recorded in the quotation.
Industrial automation technical reference
Allen-Bradley
1756-CNBIndustrial communication module Allen-Bradley model 1756-CNB
Verify the part number and specifications; the image alone does not establish suitability.
- ARAN VISION reference
- AV-FEED-NKY9SL
- Category
- Machine safety
- Manufacturer sourcing lead time
- Manufacturer confirmation required
Delivery to your location is confirmed separately.
- Documents / datasheets
- ARAN VISION specification sheet
Technical specifications
- Lifecycle Status
- Discontinued
- Repair Options Available
- Yes
- Communication
- ControlNet
- Interface
- 1 ControlNet BNC
- Number of channels
- 1
- Conducted RF immunity
- 10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
- Connections supported, max
- 64 maximum
- ControlNet cable
- 1786-RG6 quad shield RG6 coaxial cable
- ControlNet port
- 1 ControlNet BNC
- Current draw
- 970mA @ 5.1V DC, 1.7mA @ 24V DC
- EFT/B immunity
- ±3kV @ 5kHz on ControlNet ports
- Emissions
- CISPR 11: Class A
- Enclosure type rating
- None (open-style)
- ESD immunity
- 6 kV contact discharges, 8 kV air discharges
- IO link master
- false
- Isolation voltage
- Standard: 30V (continuous), basic insulation type, ControlNet network to, backplane, Redundant: 30V (continuous), basic insulation type, ControlNet A/B to, backplane, and ControlNet A to ControlNet B, USB to backplane and USB to ControlNet, No isolation b
- Logix communication connections range
- 40...48
- Module location
- Chassis based, any slot
- NAP cable
- 1786-CP
- NAP port
- 1 NAP RJ45
- Number of nodes, max
- 99 nodes
- Operating temperature
- 0 to 60 °C
- Power dissipation
- 5.1 W
- Radiated RF immunity
- 10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
- Radio standard Bluetooth
- false
- Radio standard GPRS
- false
- Radio standard GSM
- false
- Radio standard UMTS
- false
- Radio standard Wi-Fi 802.11
- false
- Redundancy
- false
- Relative humidity
- 5...95% noncondensing
- Shock
- Operating: 30 G, Non operating: 50 G
- Slot width
- 1
- Storage temperature
- -40 to 85 °C
- Supporting protocol for ASI
- false
- Supporting protocol for AS-Interface Safety at Work
- false
Documents / datasheets
Source reviewed: 2026-10-24
Description
Industrial communication module Allen-Bradley part number 1756-CNB; Communication: ControlNet; Interface: 1 ControlNet BNC; Number Of Channels: 1. Technical specifications, condition and supply feasibility are checked before ordering.
Condition and order verification
Matching technical version
The part number, revision, firmware or version is checked against your requirements. Apparently similar products may differ in price because of their version or condition.
Delivery estimate before ordering
Specialist products have a lead time. The valid delivery estimate is stated in the quotation after checking availability and specifications.
Products in the same technical family
Category similarity does not establish compatibility or replacement suitability.
1756-CN2RXTIndustrial communication module Allen-Bradley model 1756-CN2RXT
Current draw: 1300mA @ 5.1V DC, 3mA @ 24V DCIsolation voltage: 30V (continuous), Basic Insulation Type, ControlNet A/B to Backplane, ControlNet A to ControlNet B, USB to, ControlNet A/B, and USB to Backplane, Type tested at 500V AC @ 60s