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BECKHOFF EL6731 EtherCAT Terminal PROFIBUS Master/Slave Module

BECKHOFF EL6731 EtherCAT Terminal PROFIBUS Master/Slave Module

Only 10 item(s) left in stock
  • Manufacturer: BECKHOFF

  • Product No.: EL6731

  • Country of origin:Germany

  • Product Type: EtherCAT Terminals

  • Payment: T/T, Western Union

  • Weight: 70g

  • Dimensions: 24 mm x 100 mm x 52 mm

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantity
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Description

Integrating PROFIBUS fieldbus networks into high-performance EtherCAT networks is simplified using the Beckhoff EL6731 communication interface. This 1-channel PROFIBUS master/slave terminal enables bidirectional data transfer between EtherCAT Terminals and legacy PROFIBUS DP, DP-V1, DP-V2, and MC installations. It operates seamlessly within the TwinCAT system, allowing differing DP cycle times per slave through the implementation of the CDL (Co-processor Dependency Link) concept.

The module functions as a highly integrated gateway, supporting up to 125 slaves and transfer rates from 9.6 kbaud up to 12 Mbaud. Its design features galvanic decoupling of the communication interface, status LEDs for rapid diagnostics, and distributed clocks for precise synchronization, making it a reliable choice for complex distributed industrial control architectures.

Features

  • Single-channel communication interface supporting both PROFIBUS master and slave operation modes.
  • Compatible with PROFIBUS DP (standard), DP-V1 (Class 1 and 2 acyclic services, alarms), DP-V2, and equidistant PROFIBUS MC.
  • Supports differing DP cycle times per slave via CDL concept execution.
  • Galvanically decoupled D-sub 9-pin interface for enhanced signal integrity and noise immunity.
  • Integrated EtherCAT Distributed Clocks functionality for precise synchronization.
  • Clear hardware diagnostics via integrated front-facing status LEDs.

Applications

  • Power generation and distribution facility monitoring.
  • Oil and gas refinery legacy network migration.
  • Water and wastewater treatment automation.
  • Factory automation and robotic assembly line synchronization.
  • Integration of legacy PROFIBUS motor drives, sensors, and remote I/O into modern EtherCAT architectures.

Technical Specifications

Manufacturer BECKHOFF
Part Number / Model EL6731
Technology PROFIBUS DP master/slave terminal
Number of Channels 1
Data Transfer Rates 9.6 kbaud to 12 Mbaud
Interfaces 1 x D-sub socket, 9-pin, galvanically decoupled
Bus Device Capacity Max. 125 slaves (up to 244 bytes input, output, parameter, configuration, or diagnostic data per slave)
Process Image Bit Width Total max. 1.4 kbyte input and 1.4 kbyte output data
Distributed Clocks Yes
Current Consumption E-bus Typical 200 mA
Hardware Diagnostics Status LEDs
Operating Temperature -25 degC to +60 degC
Storage Temperature -40 degC to +85 degC
Relative Humidity 95 %, no condensation
Vibration/Shock Resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity/Emission Conforms to EN 61000-6-2 / EN 61000-6-4
Protection Rating IP20
Installation Position Variable mounting position
Housing Material Polycarbonate
Dimensions (W x H x D) 24 mm x 100 mm x 52 mm
Installation On 35 mm DIN rail (conforming to EN 60715) with lock
Wiring Connection Specific push-in connection (E-bus)
Weight Approx. 70 g

Connections and Interfaces

Connector / Pin Function / Description
9-Pin D-Sub Socket Standard PROFIBUS interface (galvanically isolated)
Push-in Terminals Direct connection to Beckhoff EtherCAT E-bus terminal block assembly

Installation Guidelines

  • Mounting: Mount on standard 35 mm DIN rail conforming to EN 60715. Ensure the locking slide mechanism is securely engaged.
  • Shielding & Grounding: Ensure the DIN rail is connected to a low-impedance functional earth. PROFIBUS cable shields must be grounded properly at the connector housing to prevent electromagnetic interference.
  • Air Circulation: Leave sufficient ventilation space above and below the terminal block assembly to allow passive cooling. Do not block air paths when mounting side-by-side with other EtherCAT terminals.
  • Wiring: Use specialized PROFIBUS-certified shielded twisted-pair cables for the D-sub connection and observe the maximum segment lengths based on selected baud rates.

Compliance and Certifications

  • CE
  • UL
  • ATEX: II 3 G Ex nA IIC T4 Gc
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What is the primary function of the Beckhoff EL6731?

The Beckhoff EL6731 is a 1-channel communication terminal that acts as a gateway, allowing the integration of PROFIBUS DP master or slave devices into an EtherCAT network.

What protocols are supported by the EL6731 module?

It supports PROFIBUS DP (standard), PROFIBUS DP-V1 (Class 1 & 2 acyclic services, alarms), DP-V2, and equidistant PROFIBUS MC.

How many PROFIBUS slaves can the EL6731 master terminal support?

It can support up to 125 slaves, with up to 244 bytes of input, output, parameter, configuration, or diagnostic data per slave.

What are the environmental operating temperatures for this terminal?

The operating temperature range is -25 degC to +60 degC, and the storage temperature range is -40 degC to +85 degC.

Does the EL6731 terminal support Distributed Clocks?

Yes, the module supports EtherCAT Distributed Clocks for highly precise time synchronization across the network.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Germany

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