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EL6731 - Beckhoff EtherCAT Communication Interface
Beckhoff presents the EL6731 Position Measurement & Communication, a high-precision EtherCAT Communication Interface engineered for industrial automation, enabling seamless data exchange and reliable control in complex production environments.

| Brand | Beckhoff |
| Product Type | EtherCAT Communication Interface |
| Product | EL6731 |
EL6731 Beckhoff EtherCAT Communication Interface Technical Specifications
| Specification | Value |
|---|---|
| Technology | PROFIBUS master/slave terminal |
| Distributed clocks | yes |
| Data transfer rates | 9.6 kbaudâ¦12 Mbaud |
| Current consumption E-bus | typ. 200 mA |
| Weight | approx. 70 g |
| Operating temperature | -25…+60°C |
| Storage temperature | -40…+85°C |
| 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 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, CCC, UL, ATEX, IECEx |
| Ex marking | ATEX:II 3 G Ex ec IIC T4 GcIECEx:Ex ec IIC T4 Gc |
| Housing - Design form | compact terminal housing with signal LEDs |
| Housing - Material | polycarbonate |
| Housing - Dimensions (W x H x D) | 24 mm x 100 mm x 52 mm |
| Housing - Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Housing - Side by side mounting by means of | double slot and key connection |
| Housing - Wiring | specific push-in connection |
| Interfaces | 1 x D-sub socket, 9-pin, galvanically decoupled |
| Bit width in the process image | total max.: 1.4 kbyte input and 1.4 kbyte output data |
| Hardware diagnostics | status LEDs |
| Fieldbus | PROFIBUS DP (standard), PROFIBUS DP-V1 (Cl. 1+2: acyclic services, alarms), DP-V2, PROFIBUS MC (equidistant) |
| Number of fieldbus channels | 1 |
The Beckhoff EL6731 is a robust Position Measurement & Communication module, specifically designed as a PROFIBUS master/slave terminal and a reliable EtherCAT Communication Interface. It supports distributed clocks for synchronized operations and offers high-speed data transfer rates ranging from 9.6 kbaud to 12 Mbaud. With a typical E-bus current consumption of 200 mA and a lightweight 70 g housing, it ensures energy-efficient performance and easy integration into existing industrial setups. Its compact polycarbonate housing measuring 24 mm x 100 mm x 52 mm can be mounted on standard 35 mm DIN rails with lock, and supports side-by-side installation through double slot and key connection. Designed for demanding industrial conditions, the EL6731 operates in temperatures from -25…+60°C and withstands storage temperatures up to -40…+85°C, with 95% humidity tolerance, vibration and shock resistance per EN 60068-2-6/EN 60068-2-27, and EMC compliance EN 61000-6-2/EN 61000-6-4. Safety certifications including CE, CCC, UL, ATEX, and IECEx reinforce its reliability in hazardous or high-demand industrial environments. The module features a 9-pin galvanically decoupled D-sub socket, hardware diagnostics via status LEDs, and a process image bit width supporting 1.4 kbyte input and output data, ensuring precise position measurement and smooth communication across controllers and devices.
The EL6731 is ideal for applications in industrial automation, process control, and machinery where accurate position measurement and reliable communication are crucial. Engineers can use it for conveyor systems, robotic arms, CNC machines, and automated production lines to ensure synchronized operations and reduce system downtime. Its support for PROFIBUS DP-V1, DP-V2, and MC standards makes integration seamless with existing industrial networks.
Its compact design, push-in wiring, and buffered communication make it easy for both junior and senior engineers to implement, troubleshoot, and expand systems efficiently. With the ability to provide synchronized data and precise position feedback, the Beckhoff EL6731 Position Measurement & Communication module is a trusted choice for enhancing operational efficiency, safety, and productivity in industrial facilities across India and globally.







