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      Allen-Bradley 1756-EN4TR
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
      Ships by Sunday, September 13

      1756-EN4TR

      Dual-port EtherNet/IP communication module

      Require for Quote:

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          PRODUCT DESCRIPTION

          Secure, high-capacity ControlLogix network communication

          Allen-Bradley 1756-EN4TR connects a ControlLogix chassis to EtherNet/IP devices through two copper Ethernet ports supporting gigabit communication. The module provides separate I/O and messaging connection resources and supports integrated motion within the compatible controller and software architecture.

          Select the network topology and firmware together: PRP requires revision 4.001 or later, while redundant adapters require revision 3.x or later. Check chassis compatibility, addressing, electronic keying and the CIP Security policy, then validate communication loading before returning the system to service.
          BEFORE YOU BUY

          Confirm the complete installed configuration

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          ACTUAL APPLICATIONS

          Network roles for ControlLogix communication

          These engineering roles follow the official ControlLogix EtherNet/IP manual. They describe supported system uses, not a claim that a particular customer installation uses this exact catalog.
          • 01 · Remote I/O

            Controller-to-field data exchange

            The module carries real-time I/O communication between a compatible controller and networked I/O. Size the configuration against the separate I/O, messaging and packet-rate limits rather than treating gigabit speed as a guaranteed application throughput.
          • 02 · Resilience

            Redundant process-network paths

            In a qualified PRP or DLR architecture, the module provides the documented network connection. PRP requires revision 4.001 or later; concurrent communication additionally depends on the supported redundant-controller and I/O-adapter configuration.
          • 03 · Security

            Controlled engineering and supervisory access

            CIP Security can protect supported EtherNet/IP communications according to the deployed policy. Configure compatible software, certificates and access requirements, and account for the lower packet-rate capacities when integrity or confidentiality is enabled.

          Technical specifications for 1756-EN4TR

          • Product Model
            1756-EN4TR
          • Product Parameters
            Dual-port EtherNet/IP communication module
          • In stock
            1 unit
          • Manufacturer
            Allen-Bradley
          • Ethernet connectors
            Two RJ45 copper ports
          • Communication rate
            10/100 Mbps and 1 Gbps
          • TCP connections
            512
          • CIP I/O connections
            1000
          • Messaging/HMI connections
            528
          • CIP unconnected messages
            256 backplane plus 256 Ethernet
          • Integrated motion
            Up to 256 axes with the documented controller and software
          • PRP firmware requirement
            Revision 4.001 or later
          • Redundant-adapter firmware
            Revision 3.x or later
          • Socket services
            Supported
          • Duplicate-IP detection
            Supported in all revisions
          • I/O packet-rate capacity
            50,000/s without CIP Security; 25,000/s integrity; 15,000/s integrity and confidentiality; specified test conditions
          View all additional
          View as PDF Ask for Quote

          Alternative Names

          Allen-Bradley 1756-EN4TR Ethernet bridge ControlLogix 1756-EN4TR communication module 1756-EN4TR dual-port EtherNet/IP module
          SYSTEM & REPLACEMENT CHECK

          Information needed before ordering

          Three direct checks to secure your system integration and minimize ordering risks.

          Information

          System integration Replacement check Manuals & support
          CONTROLLOGIX ETHERNET/IP

          Coordinate firmware, topology and security

          Install the module in the supported ControlLogix chassis and confirm the available backplane capacity. Follow the manufacturer installation instructions and the operating-temperature limits for the actual chassis series.
          Use the approved module profile and electronic-keying configuration. Record IP settings, port topology and firmware before replacement; PRP and redundant-adapter operation have different minimum firmware requirements.
          When CIP Security or concurrent communication is used, check the supported controller, software and network configuration. Validate the selected security policy and message loading instead of assuming that the headline connection limits guarantee system performance.

          Features:

          • Supported chassis and module profile
          • Firmware-specific network functions
          • Security-dependent communications capacity
          The Allen-Bradley 1756-EN4TR requires network and firmware checks before system integration and commissioning.
          INTERCHANGEABILITY

          Verify the complete replacement identity before commissioning

          Match the complete 1756-EN4TR catalog number and installed revision. A similar EtherNet/IP module is not automatically interchangeable: connection capacity, topology and supported firmware can differ.
          Use the manufacturer compatibility resources to check firmware and software before selecting a substitute. The sources reviewed for this migration do not establish an exact discontinuation date or an unconditional successor.
          Back up the controller project and the approved network and security settings. After replacement, verify addressing, electronic keying, I/O and messaging connections, and the configured redundant paths before releasing the system.

          Features:

          • Confirm exact catalog and firmware
          • Review topology and security requirements
          • Test communication after replacement
          The Allen-Bradley 1756-EN4TR requires replacement verification against the complete installed configuration and current manufacturer documentation.
          DOCUMENTATION STATUS

          Browse the Manuals, Datasheets, Official Documents, Links

          Important Notice: Amikon is an independent supplier. Consult the applicable Rockwell Automation documentation and installed configuration before selection, installation or replacement.

          Features:

          • Exact-model reference documents
          • Hardware and system compatibility checks
          • Accessories are supplied only when listed in the quotation
          Documentation for the Allen-Bradley 1756-EN4TR supports document applicability checks before installation or replacement.

          Also searched as

          1756-EN2TK 1756-DMD30 1756-EWEB 1757-FFLD2 1756-L55M13/A

          Important notice

          Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
          This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
          BUYER INFORMATION

          Commercial terms without hidden steps

          Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
          • 01

            Shipping & delivery

            Dispatch
            Eligible stock: same / next day
            Carriers
            DHL, FedEx or UPS
            Ship from
            Xiamen, China
            Packed size
            Packed dimensions unconfirmed
            Shipping weight
            Gross weight unconfirmed
          • 02

            Payment & customs

            Payment
            Bank transfer (T/T)
            Currencies
            USD · EUR · GBP · RMB
            Credit cards
            Not accepted
            HS reference
            Classification unconfirmed
            Origin
            Origin unconfirmed
          • 03

            Warranty & returns

            Warranty
            12 months from AMIKON
            Inspection
            Label, condition and packing checks
            Returns
            Prior RMA authorisation required
            Compatibility
            Confirm before order
            OEM warranty
            Does not apply
          Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.

          • Part checked

            Full suffix recorded

          • Condition checked

            Label and appearance

          • Packing checked

            Antistatic protection

          • Tracking supplied

            Established couriers

          • Sandy Lin

            Dedicated account manager · 15+ years
          FREQUENTLY ASKED QUESTIONS

          Questions buyers ask about 1756-EN4TR

          Direct answers about identity, compatibility, stock, warranty, payment and shipping.

          • Does 1756-EN4TR support gigabit communication on both Ethernet connections?

            The official network table lists dual copper media with 10/100 Mbps and 1 Gbps operation. Use the specified cabling and compatible network equipment.

          • Which firmware is required for PRP?

            The 1756-TD003R specification requires revision 4.001 or higher for PRP on 1756-EN4TR. Verify the actual installed firmware before configuring a PRP network.

          • Is PRP support the same as redundant-adapter support?

            No. These are separate functions. The official specification lists revision 3.x or higher for redundant adapters and revision 4.001 or higher for PRP. Confirm the complete architecture.

          • Does enabling CIP Security affect available packet rates?

            Yes. The manual lists lower I/O and HMI/MSG packet-rate capacities when integrity and confidentiality are enabled. Evaluate actual message size, loading and security requirements together.

          • Can all connection limits be pooled into one capacity?

            No. The official table separately lists 512 TCP connections, 1000 CIP I/O connections and 528 messaging/HMI connections. Size each resource against its actual use.

          • Can the module communicate with devices that do not implement EtherNet/IP?

            The documented socket interface can support communication with suitable standard Ethernet devices through the controller application. Check the device protocol and the EtherNet/IP Socket Interface application guide before implementation.
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