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Beckhoff Ethercat Terminal EL6751 with Master Slave Terminal
- Beckhoff
- 15-20days
- 10 per month
- EL6751
Product Advantages and Features
1.Seamless cross-protocol interconnection capability
As a professional Profinet and EtherCAT protocol conversion gateway, it enables bidirectional transparent data transmission between different bus systems without secondary development, solving the interconnection problems of multi-brand and multi-protocol devices in industrial automation and significantly reducing system integration complexity.
2.High real-time performance and transmission efficiency
Supporting Profinet IRT mode, with data transmission rate up to 100Mbps and single-frame processing delay as low as 10μs, it meets scenarios with extremely high real-time requirements such as motion control and precision machining, ensuring the accuracy of equipment collaborative response.
3.Industrial-grade high reliability
Adopting wide temperature design with vibration resistance and electromagnetic interference resistance; integrating overvoltage and overcurrent protection functions, automatically cutting off the circuit in case of abnormalities, with mean time between failures (MTBF) exceeding 100,000 hours, ensuring continuous and stable operation in industrial sites.
4.Real-time data transmission
Based on hardware-accelerated protocol processing mechanism, it ensures low latency and high bandwidth for real-time data transmission, meeting the efficient transmission needs of real-time data such as motion control commands and sensor data.
Product Technical Parameters
ParameterCategory | Specifics | Unit |
Basic Info | Model / Brand | EL6751 / Beckhoff |
Type | Profinet/EtherCAT Protocol Gateway | |
Protocol & Comm. | Supported Protocols | Profinet (IRT/RT), EtherCAT |
Comm. Rate / Ports | 100Mbps (Full Duplex) / 2×Profinet (RJ45), 1×EtherCAT (RJ45) | |
Data Delay / Max Slaves | ≤10μs / 65,535 (EtherCAT Daisy Chain) | |
Power & Env. | Supply Voltage / Power Consumption | 24V DC (±10%) / ≤5W |
Operating Temp / Protection Class | -25~+60℃ / IP20 | |
Physical | Dimensions (L×W×H) / Mounting | 100×100×32mm / 35mm DIN Rail |
Key Features | Protection / Config Software | Overvoltage/Overcurrent / TwinCAT 3 |
Product Application Scope
Multi-bus Industrial Automation Production Line Transformation
During the upgrading of traditional factories, when the production line has both Siemens Profinet equipment and Beckhoff EtherCAT equipment at the same time, the EL6751 can serve as the core of protocol conversion to realize bidirectional transparent data transmission between the two types of bus systems. It can complete the integration of the automation system without replacing the original equipment, reducing transformation costs and downtime.
Multi-axis Collaborative Control of Precision Machine Tools
In equipment such as five-axis machining centers and CNC milling machines, if the machine tool spindle drive adopts a Profinet servo system and the auxiliary axes use EtherCAT stepper control modules, the EL6751 can ensure that the synchronous control error between the spindle and auxiliary axes is <1ms through low-latency (≤10μs) protocol conversion, meeting the strict requirements for motion coordination in precision part machining.
Product Description
Category | EnglishDescription |
Core Identity | Beckhoff EL6751, Profinet/EtherCAT bidirectional protocol conversion gateway |
Key Function | Enables transparent data transfer between Profinet (IRT/RT) and EtherCAT systems |
Comm. Performance | 100Mbps full-duplex; ≤10μs data delay; supports up to 65,535 EtherCAT slaves |
Port Configuration | 2×Profinet (RJ45) + 1×EtherCAT (RJ45); compatible with linear/star/daisy-chain topologies |
Operating Env. | -25℃~+60℃ working temp; IP20 protection; overvoltage/overcurrent protection |
Software & Compat. | Configurable via TwinCAT 3; works with Siemens/Beckhoff multi-brand industrial devices |
Physical Specs | 100×100×32mm; 35mm DIN rail mounting; ~200g weight; 24V DC (±10%) power supply |
The EL6751 is a bidirectional Profinet/EtherCAT protocol conversion gateway module under Beckhoff. Its core function is to realize transparent data transmission between the two bus systems. It supports 100Mbps full-duplex communication, with a data delay of ≤10μs, and can connect up to 65,535 EtherCAT slaves. It features a wide operating temperature range of -25℃~+60℃, IP20 protection, and overvoltage/overcurrent protection. Configurable via TwinCAT 3, it can adapt to multi-brand industrial equipment without secondary development, significantly reducing the integration cost of multi-bus systems. It is suitable for industrial scenarios such as production line transformation and precision control.
Company Introduction
Haopai Co., Ltd. was established in 2008 and is a comprehensive service enterprise specializing in machinery and accessories for the home industry. We have a specialized and innovative customer center, component assembly workshop, equipment debugging workshop, processing workshop, and warehousing. Our main business includes sales of mechanical parts, equipment upgrades and renovations, equipment maintenance and relocation, customized non-standard equipment, intelligent production line planning, automation support, machine vision, shared cloud warehouses, etc. We provide customers with professional personalized services. After more than ten years of accumulation and development, our elite service team of nearly 200 people has served over 10000 enterprises nationwide. Over the years, we have accumulated more than 200000 non-standard accessory categories, making us the most comprehensive one-stop procurement platform in the industry. We have the most competitive technical renovation team in China, with a total of over 100000 equipment upgrade and renovation projects. Haopai Co., Ltd. has been committed to the great cause of making global machinery and preferred Chinese parts for many years, and is determined to become the preferred brand for comprehensive services of global machinery and parts.


Deeply Cultivating the Industry for More Than Ten Years, Creating an Intelligent Manufacturing Full Chain System for Woodworking Machinery.
After 16 years of industry accumulation, we have always focused on the research and manufacturing of CNC woodworking machinery. We have established a leading full chain production system and specialized team structure, providing one-stop services from research and development to delivery for global customers. It is currently a one-stop procurement platform with a complete range of categories in the industry.
Specialized and Innovative Customer Center



Haopai has been committed to the business philosophy of quality first, integrity-based, and win-win cooperation. We adhere to the business philosophy of ultimate customer experience and efficient operation, and uphold the service spirit of taking non-standard customization, drilling difficulties, and solving difficulties as our own responsibility. We constantly innovate and aspire to become the preferred brand for comprehensive services of global machinery and accessories. We are committed to making the great cause of global machinery and preferred Chinese accessories contribute to the development of national brands and the strength of Haopai people.




Team Style
Professional team, always on standby
The service team is distributed in pre-sales consulting, order management, technical support, and after-sales service positions, with 7 × 12 hours of online response to ensure that your needs are processed in the first time.






Haopai Intelligent Cloud Warehouse, Escorting You
In Order to Solve the Problems of High Procurement Costs, Low Efficiency, Difficult Management, Slow Logistics, And High Stagnant Inventory of Industrial Materials in Factories, Haopai Shared Cloud Warehouse Emerged in 2020. Greater Efforts Will Be Made to Assist Customers in Achieving Zero Capital Occupation, Spare Parts Inventory, And Improving Their Digital Level.




Machining Workshop




Component Assembly Workshop


New Media Center


The Intelligent Dispatching System Established in 2021 Has Achieved Intelligent Personnel Allocation, Real-Time Control of Technical Personnel's Work Status, Mobile Dispatching, Accurate and Effective Arrangement of Various Tasks, Precise Control of Project Costs, Thus Creating a Fast Response, Efficient, And Professional After-Sales Service Team.




Patent Certificates
Cooperative Partner
We Have Served over 10000 Enterprises Nationwide and Have Accumulated over 200000 Non-standard Accessory Categories over the Years, Covering Major Home Furnishing Brands Across the Country.