1756-ENBT

ControlLogix Enet/IP Comms Module

Name: ControlLogix Enet/IP Comms Module
Brand: Rockwell Automation
SKU: 1756-ENBT

Serial #:

Lifecycle status: Discontinued

Rockwell Automation announces that as of December 31, 2021, the ControlLogix Enet/IP Comms Module will be discontinued and no longer available for sale. Customers are encouraged to remove references to the affected product(s)

Discontinued Date: December 31, 2021 Replacement Category: Functional Replacement Replacement Product: 1756-EN2T [https://www.rockwellautomation.com/en-us/products/details.1756-EN2T.html]

Product at a glance

Replacement Available

Repairable/Replaceable Calculate your impact

Product Registration

Description

EtherNet/IP communication module, 10/100M twisted pair, 64 TCP connections

Lifecycle status: Discontinued

Discontinued Date: December 31, 2021 Replacement Category: Functional Replacement Replacement Product: 1756-EN2T [https://www.rockwellautomation.com/en-us/products/details.1756-EN2T.html]

Product at a glance

Replacement Available

Repairable/Replaceable Repairable/Replaceable

Product Registration

Description

EtherNet/IP communication module, 10/100M twisted pair, 64 TCP connections

Unique Product Identifier	1756-ENBT
UPC	612598269488
Standard Warranty Duration	1 year See details
Country of Origin	United States of America

Application	EtherNet/IP
Communication	Ethernet/IP
Communication	Ethernet/IP
Display	Digital
Enclosure	None (open-style)
Interface	1 Copper RJ45 (10/100 Mbps)
Mounting	Chassis
Number Of Channels	1
Sub Brand	ControlLogix
Type	Communication Module

ATEX temp code	T4
CIP unconnected messages	64 + 64 (backplane + Ethernet)
Communication rate	10/100 Mbps
Connections supported, max	TCP: 64, CIP: 128 (CIP connections can be used for all explicit or all implicit applications. for exAle, a 1756-ENBT module has a total of 128 CIP connections that can be used for any combination of connections.)
Current draw	700mA @ 5.1V DC, 3mA @ 24V DC
Enclosure type rating	None (open-style)
Ethernet cable	802.3 compliant shielded or unshielded twisted pair
Ethernet ports	1 Ethernet RJ45 Category 5
IO link master	False
Isolation voltage	30V (continuous), basic insulation type, Ethernet, network to backplane, Type tested @ 707V DC @ 60s
Power dissipation	3.7 W
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
Slot width	1
Supporting protocol for AS-Interface Safety at Work	False
Supporting protocol for ASI	False
Supporting protocol for CAN	False
Supporting protocol for Data-Highway	False
Supporting protocol for DeviceNet	False
Supporting protocol for DeviceNet Safety	False
Supporting protocol for EtherNet/IP	True
Supporting protocol for Foundation Fieldbus	False
Supporting protocol for INTERBUS	False
Supporting protocol for INTERBUS-Safety	False
Supporting protocol for KNX	False
Supporting protocol for LON	False
Supporting protocol for Modbus	False
Supporting protocol for PROFIBUS	False
Supporting protocol for PROFINET CBA	False
Supporting protocol for PROFINET IO	False
Supporting protocol for PROFIsafe	False
Supporting protocol for SERCOS	False
Supporting protocol for SUCONET	False
Supporting protocol for SafetyBUS p	False
Supporting protocol for TCP/IP	True
Supporting protocol for other bus systems	False
Thermal dissipation	12.6 btu/h
Wiring category	2 - on Ethernet ports
With optical interface	False
With potential separation	False

Conducted RF immunity	10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
EFT/B immunity	±2kV @ 5kHz on Ethernet ports
ESD immunity	6 kV contact discharges, 8 kV air discharges
Emissions	CISPR 11: Class A
Operating temperature	0 °C <60 °C (32 °F <140 °F)
Radiated RF immunity	10V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 1V/m with 1 kHz sine wave 80% AM from 2000...2700 MHz
Relative humidity	5...95% noncondensing
Shock	Operating: 30 G, Non operating: 50 G
Storage temperature	-40 °C <85 °C (-40 °F <185 °F)
Surge transient immunity	±2 kV line-earth (CM) on Ethernet ports
Surrounding air temperature, max	60 °C
Vibration	2 G @ 10...500 Hz

Mechanical

Module location	Chassis based, any slot

Drawings
3-Dimensional STEP model (STP)	Download (ZIP)
Product Drawing	Drawing (DXF)

Drawings
3-Dimensional STEP model (STP) Download (ZIP)
Product Drawing Drawing (DXF)

General	Publication
Product Cutsheet	--
Product Profile	--
Selection Guide	1756-SG001

Installation Instructions	Publication
1756-in019_-en-p	1756-IN019

Technical Data	Publication
1756-td003_-en-e	1756-TD003

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Available Downloads

Comms Bundle for 1756-ENBT
AOP for 1756-ENxTR Ethernet Modules v10.00.00
AOP for 1756-ENxT Ethernet Modules v6.03.20
Firmware for 1756-ENBT v6.006
EDS files for 1756-ENBT (multi)
EDS files for ControlLogix Family (multi)
AOP - Add On Profiles for 1756-ENBT v40.10.13
AOP - Add On Profiles for 1756 Ethernet Bridge v40.12.22

See All Downloads

This product was certified with the above certifications as of 2026-07-16. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.

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Regulatory Information

EU Importer Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium
EU Authorized Representative Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium

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Technotes

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Overview

Unique Product Identifier	1756-ENBT
UPC	612598269488
Standard Warranty Duration	1 year See details
Country of Origin	United States of America

Electrical & Connectivity

Application	EtherNet/IP
Communication	Ethernet/IP
Communication	Ethernet/IP
Display	Digital
Enclosure	None (open-style)
Interface	1 Copper RJ45 (10/100 Mbps)
Mounting	Chassis
Number Of Channels	1
Sub Brand	ControlLogix
Type	Communication Module

ATEX temp code	T4
CIP unconnected messages	64 + 64 (backplane + Ethernet)
Communication rate	10/100 Mbps
Connections supported, max	TCP: 64, CIP: 128 (CIP connections can be used for all explicit or all implicit applications. for exAle, a 1756-ENBT module has a total of 128 CIP connections that can be used for any combination of connections.)
Current draw	700mA @ 5.1V DC, 3mA @ 24V DC
Enclosure type rating	None (open-style)
Ethernet cable	802.3 compliant shielded or unshielded twisted pair
Ethernet ports	1 Ethernet RJ45 Category 5
IO link master	False
Isolation voltage	30V (continuous), basic insulation type, Ethernet, network to backplane, Type tested @ 707V DC @ 60s
Power dissipation	3.7 W
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
Slot width	1
Supporting protocol for AS-Interface Safety at Work	False
Supporting protocol for ASI	False
Supporting protocol for CAN	False
Supporting protocol for Data-Highway	False
Supporting protocol for DeviceNet	False
Supporting protocol for DeviceNet Safety	False
Supporting protocol for EtherNet/IP	True
Supporting protocol for Foundation Fieldbus	False
Supporting protocol for INTERBUS	False
Supporting protocol for INTERBUS-Safety	False
Supporting protocol for KNX	False
Supporting protocol for LON	False
Supporting protocol for Modbus	False
Supporting protocol for PROFIBUS	False
Supporting protocol for PROFINET CBA	False
Supporting protocol for PROFINET IO	False
Supporting protocol for PROFIsafe	False
Supporting protocol for SERCOS	False
Supporting protocol for SUCONET	False
Supporting protocol for SafetyBUS p	False
Supporting protocol for TCP/IP	True
Supporting protocol for other bus systems	False
Thermal dissipation	12.6 btu/h
Wiring category	2 - on Ethernet ports
With optical interface	False
With potential separation	False

Compliance & Environment

Conducted RF immunity	10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
EFT/B immunity	±2kV @ 5kHz on Ethernet ports
ESD immunity	6 kV contact discharges, 8 kV air discharges
Emissions	CISPR 11: Class A
Operating temperature	0 °C <60 °C (32 °F <140 °F)
Radiated RF immunity	10V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 1V/m with 1 kHz sine wave 80% AM from 2000...2700 MHz
Relative humidity	5...95% noncondensing
Shock	Operating: 30 G, Non operating: 50 G
Storage temperature	-40 °C <85 °C (-40 °F <185 °F)
Surge transient immunity	±2 kV line-earth (CM) on Ethernet ports
Surrounding air temperature, max	60 °C
Vibration	2 G @ 10...500 Hz

Physical Characteristics

Mechanical

Module location	Chassis based, any slot

Drawings

Drawings
3-Dimensional STEP model (STP)	Download (ZIP)
Product Drawing	Drawing (DXF)

Drawings
3-Dimensional STEP model (STP) Download (ZIP)
Product Drawing Drawing (DXF)

Documents

Product Cutsheet General
--

Product Profile General
--

Selection Guide General
1756-SG001

1756-in019_-en-p Installation Instructions
1756-IN019

1756-td003_-en-e Technical Data
1756-TD003

General	Publication
Product Cutsheet	--
Product Profile	--
Selection Guide	1756-SG001
Installation Instructions	Publication
1756-in019_-en-p	1756-IN019
Technical Data	Publication
1756-td003_-en-e	1756-TD003