When searching for a PLC Ethernet module high speed, you’re looking for reliable, fast, and scalable communication solutions to enhance industrial automation. The Allen Bradley 1785-ENET/B Revision B01 stands out as the overall best choice for its robustness and compatibility, while the 1756-ENBT EtherNet/IP Module offers excellent performance at a competitive price. Other options like the AXC 1050 excel in compact design and dual Ethernet ports for redundancy. The main tradeoffs involve balancing speed, ease of integration, and budget constraints. Continue reading for a detailed breakdown of each option to find the best fit for your needs.
Key Takeaways
- High-speed data transfer is primarily achieved through modules with dual Ethernet ports or advanced industrial protocols like EtherNet/IP.
- Compatibility with existing PLC series influences the selection—some modules are tailored for specific brands like Allen Bradley or Omron.
- Price varies widely depending on features such as redundancy, port count, and protocol support; premium models often offer better scalability.
- Ease of installation and maintenance can differ significantly, with compact models favoring simpler setups for smaller systems.
- Tradeoffs often involve choosing between raw speed and features like security, redundancy, and protocol versatility.
| Allen Bradley 1785-ENET/B Revision B01 PLC-5 Ethernet Interface Module |  | Best for Reliability in Established PLC Systems | Compatibility: PLC-5 systems | VIEW ON AMAZON | See Our Full Breakdown | ||
| Ethernet Communication Module QJ71NT11B for Programmable Logic Controllers |  | Best for High-Speed, Flexible Network Integration | Protocol Support: TCP/IP, UDP | Application: Industrial automation, PLC communication | Construction: Durable materials | VIEW ON AMAZON | See Our Full Breakdown |
| CJ1W-ETN21 Ethernet Communication Module for CJ Series PLCs |  | Best for Seamless Integration with CJ Series PLCs | Model: CJ1W-ETN21 | Compatibility: CJ Series PLCs | Features: High-speed transfer, easy installation | VIEW ON AMAZON | See Our Full Breakdown |
| 1756-ENBT EtherNet/IP Module PLC |  | Best for Seamless Ethernet/IP Connectivity in Large PLC Systems | Model Number: 1756-ENBT | Type: EtherNet/IP Module | Application: PLC/Automation | VIEW ON AMAZON | See Our Full Breakdown |
| Industrial Programmable Logic Controller Module AXC 1050 – Compact DIN Rail PLC with Dual Ethernet Ports |  | Best for High-Speed, Dual Port Networking in Rugged Environments | Number of Ports: 2 | Data Transfer Rate: 100 Mbps | Voltage: 24 volts | VIEW ON AMAZON | See Our Full Breakdown |
| 1769-AENTR Dual Port Ethernet Module for PLC |  | Best for Industrial Reliability and Compact Design | Model: 1769-AENTR | Type: Dual Port Ethernet Module | Item Weight: 12.3 ounces | VIEW ON AMAZON | See Our Full Breakdown |
| 1756-ENBT EtherNet/IP Module PLC |  | Best for High-Speed Industrial Network Integration | Model Number: 1756-ENBT | Type: EtherNet/IP Module | Application: PLC communication | VIEW ON AMAZON | See Our Full Breakdown |
| OMRON CJ1W-ETN21 Ethernet Communication Module |  | Best for Easy DIN Rail Installation and Basic Ethernet Needs | Network Speed: 10/100 Mbps | Input Type: Ethernet | Mounting: DIN Rail | VIEW ON AMAZON | See Our Full Breakdown |
| PLC Ethernet Module for Fast Data Communication in Industrial Control Settings |  | Best for RS232-to-Ethernet Expansion and Quick Data Transfer | Function: Expand RS232 to Ethernet | Connections: Supports UDP, two client connections | Baud Rate: 115200 | VIEW ON AMAZON | See Our Full Breakdown |
More Details on Our Top Picks
Allen Bradley 1785-ENET/B Revision B01 PLC-5 Ethernet Interface Module
This module stands out for its compatibility with the well-established PLC-5 systems, providing reliable Ethernet connectivity in industrial environments. Compared to newer modules like the AXC 1050, it emphasizes proven stability over high-speed features, making it ideal for legacy systems. Its limited specs and lack of detailed features suggest it may not support the latest network protocols or fast data exchange. This makes it less suited for modern, high-speed automation setups but perfect for those maintaining existing PLC-5 infrastructure. The main tradeoff is its outdated interface and minimal information, which could hinder troubleshooting or future upgrades.Pros:- Reliable industrial Ethernet connection within PLC-5 environments
- Designed specifically for legacy systems, ensuring compatibility
- Simple to deploy in compatible setups
Cons:- Limited feature set and no recent updates available
- Lack of detailed specifications and user feedback
Best for: Factories with legacy PLC-5 systems needing stable Ethernet connectivity without extensive upgrades
Not ideal for: New automation projects aiming for the latest high-speed networking or flexible integration, due to its limited features
- Compatibility:PLC-5 systems
Our verdict“Best suited for maintaining legacy PLC-5 systems where stability outweighs high-speed performance.”
Ethernet Communication Module QJ71NT11B for Programmable Logic Controllers
The QJ71NT11B excels in supporting high-speed data transfer through TCP/IP and UDP protocols, making it a strong choice for modern automation setups. Compared with the CJ1W-ETN21, it offers greater configurability and supports a broader range of protocols, appealing to engineers who need flexible network integration. Its durable construction suits industrial environments, but it may require technical expertise to configure properly—especially for users unfamiliar with network settings. This tradeoff means it’s ideal for those who value performance and adaptability over straightforward installation. It’s less suitable for small-scale or simple automation projects where minimal setup is preferred.Pros:- Supports high-speed data exchange via TCP/IP and UDP
- Durable construction suitable for industrial environments
- Highly configurable network settings
Cons:- Requires technical knowledge for setup and configuration
- Designed specifically for compatible automation systems
Best for: Automation engineers needing customizable, high-speed Ethernet communication in complex industrial systems
Not ideal for: Beginner users or small facilities with simple control needs, due to its configuration complexity
- Protocol Support:TCP/IP, UDP
- Application:Industrial automation, PLC communication
- Construction:Durable materials
Our verdict“An excellent choice for high-speed, customizable network communication in advanced industrial automation.”
CJ1W-ETN21 Ethernet Communication Module for CJ Series PLCs
This module offers high-speed data transfer tailored explicitly for CJ Series PLCs, with straightforward installation and reliable performance. Compared with the QJ71NT11B, it emphasizes ease of integration and durability, making it ideal for users already invested in CJ hardware. Its limitation to CJ Series PLCs reduces its versatility, but this focus ensures optimized performance within that ecosystem. If your setup involves CJ Series controllers, this module simplifies deployment; otherwise, it’s not suitable for mixed or different brands. The main tradeoff is its restricted compatibility, which might require additional modules for diverse systems.Pros:- High-speed data transfer for CJ Series PLCs
- Easy to install and integrate with existing CJ systems
- Reliable and durable in industrial settings
Cons:- Limited to CJ Series PLCs only
- Requires compatible CJ hardware for full functionality
Best for: Industries using CJ Series PLCs seeking hassle-free high-speed Ethernet communication
Not ideal for: Multi-vendor environments or users with non-CJ hardware, due to its narrow compatibility
- Model:CJ1W-ETN21
- Compatibility:CJ Series PLCs
- Features:High-speed transfer, easy installation
Our verdict“Ideal for CJ Series users who need a straightforward, reliable Ethernet connection without added complexity.”
1756-ENBT EtherNet/IP Module PLC
This module offers reliable Ethernet/IP support tailored for Allen-Bradley PLC setups, emphasizing seamless network integration. Compared with the AXC 1050, it leans toward proven industrial reliability over newer features or compact design. Its limited technical details and the absence of reviews make it less transparent for buyers seeking specific specs or user feedback. The focus on Ethernet/IP makes it ideal for large, established automation networks but less adaptable for projects requiring diverse protocols or rapid updates. The main drawback is its lack of detailed information, which could complicate planning or troubleshooting in complex systems.Pros:- Reliable Ethernet/IP connectivity for industrial PLCs
- Supports seamless integration with existing networks
- Manufacturer’s quality assurance
Cons:- Lack of detailed technical specifications
- Limited information on compatibility and features
Best for: Large-scale industrial environments with existing Ethernet/IP networks needing dependable connectivity
Not ideal for: Smaller or newer automation projects where detailed specs and flexibility are priorities
- Model Number:1756-ENBT
- Type:EtherNet/IP Module
- Application:PLC/Automation
Our verdict“Best for large, Ethernet/IP-focused automation systems where proven reliability outweighs advanced features.”
Industrial Programmable Logic Controller Module AXC 1050 – Compact DIN Rail PLC with Dual Ethernet Ports
The AXC 1050 stands out for its dual Ethernet ports, supporting high-speed data exchange up to 100 Mbps, making it ideal for factory automation requiring robust network redundancy or increased throughput. Its compact DIN rail design facilitates straightforward installation in tight spaces, and support for IEC 61131-3 broadens its programming compatibility. Compared with the CJ1W-ETN21, it offers more network versatility with two ports, but its power requirements are limited to 24V and low power consumption at 2.5W. This makes it less suitable for high-power industrial environments or those requiring wireless connectivity. It’s best suited for applications demanding reliable, high-speed network integration with minimal footprint.Pros:- Dual Ethernet ports for network redundancy or high throughput
- Rugged design ideal for harsh industrial environments
- Supports IEC 61131-3 programming for broad compatibility
- Compact size for DIN rail mounting
Cons:- Limited to 24V power supply, restricting flexibility
- Low maximum power consumption (2.5W) may limit future upgrades
- No wireless or advanced connectivity features
Best for: Factory automation environments needing dual Ethernet ports and rugged, space-efficient control modules
Not ideal for: Systems requiring wireless connectivity or higher power input, due to its limited voltage and power options
- Number of Ports:2
- Data Transfer Rate:100 Mbps
- Voltage:24 volts
- Power Consumption:2.5W
- Maximum Temperature:140 °F
- Interface:Ethernet, RJ45
Our verdict“Best for industrial settings requiring dual Ethernet ports and rugged, compact control modules for reliable high-speed networking.”
1769-AENTR Dual Port Ethernet Module for PLC
The 1769-AENTR stands out for its reliable dual port Ethernet connectivity, making it ideal for complex PLC setups that demand stable and redundant network links. Its sealed, durable design ensures protection in harsh environments, while its compact size allows seamless integration into tight industrial spaces. Compared with the 1756-ENBT, this module is less feature-rich but offers better physical robustness and ease of installation. Its main tradeoff is the limited technical specifications available, which could pose challenges for advanced network configurations. This pick makes the most sense for engineers needing a durable, space-efficient Ethernet solution in industrial automation.
Specs: Model: 1769-AENTR, Type: Dual Port Ethernet Module, Item Weight: 12.3 ounces, Package Dimensions: 0.39 x 0.39 x 0.39 inches, Warranty: See product page for details.Pros:- Reliable dual port Ethernet connectivity for PLC systems
- Compact size suitable for tight industrial environments
- Sealed design enhances durability and protection
Cons:- Limited detailed technical specifications available
- No price information provided
- Requires familiarity with industrial automation modules
Best for: Industrial automation professionals seeking rugged, dual Ethernet ports for reliable PLC networking.
Not ideal for: Users requiring detailed technical specifications or advanced networking features.
- Model:1769-AENTR
- Type:Dual Port Ethernet Module
- Item Weight:12.3 ounces
- Package Dimensions:0.39 x 0.39 x 0.39 inches
- Warranty:See product page for details
Our verdict“Best suited for industrial environments requiring durable dual Ethernet ports with straightforward deployment.”
1756-ENBT EtherNet/IP Module PLC
The 1756-ENBT is a solid choice for high-speed Ethernet communication in PLC systems, supporting EtherNet/IP protocols that facilitate seamless device integration. Compared with the 1769-AENTR, it offers a more established communication standard, making it preferable for systems that rely heavily on EtherNet/IP. However, detailed specifications and user feedback are scarce, which could complicate troubleshooting or advanced setup. This module is ideal for automation engineers prioritizing reliable, high-speed data transfer across a broad range of devices. Its main drawback is the lack of detailed feature descriptions, which might leave some users wanting more clarity on its capabilities.
Specs: Model Number: 1756-ENBT, Type: EtherNet/IP Module, Application: PLC communication.Pros:- High-speed Ethernet communication for industrial automation
- Reliable and safe operation in demanding environments
- Compatible with various automation systems
Cons:- Limited details on features and specifications
- No pricing or customer reviews available
- Potential difficulty in assessing advanced capabilities
Best for: Automation engineers needing high-speed, reliable EtherNet/IP connectivity for complex PLC networks.
Not ideal for: Users seeking detailed technical features or working with systems outside EtherNet/IP protocols.
- Model Number:1756-ENBT
- Type:EtherNet/IP Module
- Application:PLC communication
Our verdict“Ideal for high-speed EtherNet/IP integration in professional PLC environments where reliability is paramount.”
OMRON CJ1W-ETN21 Ethernet Communication Module
The OMRON CJ1W-ETN21 offers straightforward Ethernet connectivity at 10/100 Mbps, making it suitable for simple industrial networking tasks. Its DIN rail mounting simplifies installation, especially in systems where space efficiency matters. Compared with the 1769-AENTR, it is less robust in harsh environments but provides sufficient performance for basic automation setups. The main limitation is its focus on standard Ethernet speeds without advanced features, restricting its use in high-speed or complex network configurations. This module makes sense for users prioritizing ease of installation over cutting-edge networking capabilities.
Specs: Network Speed: 10/100 Mbps, Input Type: Ethernet, Mounting: DIN Rail, Current: 370 mA, Termination Style: RJ45.Pros:- Supports standard Ethernet speeds of 10/100 Mbps
- DIN rail mounting simplifies installation
- Reliable RJ45 connection
Cons:- Limited to basic Ethernet network connectivity
- No mention of advanced features or compatibility
- Lacks higher data rate options
Best for: Small to medium industrial settings needing simple Ethernet connectivity with easy mounting.
Not ideal for: High-performance automation setups requiring gigabit speeds or advanced network features.
- Network Speed:10/100 Mbps
- Input Type:Ethernet
- Mounting:DIN Rail
- Current:370 mA
- Termination Style:RJ45
Our verdict“Best for straightforward Ethernet communication in smaller or less complex industrial systems.”
PLC Ethernet Module for Fast Data Communication in Industrial Control Settings
This Ethernet module specializes in expanding RS232 ports for PLC networking, supporting UDP connections with a maximum baud rate of 115200. Its power supplied directly from the RS232 port simplifies setup, making it suitable for control environments where quick data transfer is needed. Compared to the 1756-ENBT or 1769-AENTR, it focuses more on serial-to-ethernet bridging rather than raw network performance. The main tradeoff is its limited scope — it’s designed for specific control functions and not for high-speed data or complex network topologies. This choice makes the most sense for integrators looking to add Ethernet capability to RS232-based PLCs without extensive network demands.
Specs: Function: Expand RS232 to Ethernet, Connections: Supports UDP, two client connections, Baud Rate: 115200, Power Supply: Direct from PLC’s RS232 port, Safety Features: Anti-reverse connection.Pros:- Supports high-speed data transmission up to 115200 baud
- Easy power setup from existing PLC RS232 port
- Supports multiple client connections and web configuration
Cons:- Limited to industrial control and serial-to-ethernet bridging
- Requires compatible RS232 and Ethernet networks
- Not suitable for high-bandwidth applications
Best for: Industrial control engineers expanding RS232-based PLCs with Ethernet connectivity for simple applications.
Not ideal for: High-speed data transfer needs or complex industrial networks requiring advanced Ethernet features.
- Function:Expand RS232 to Ethernet
- Connections:Supports UDP, two client connections
- Baud Rate:115200
- Power Supply:Direct from PLC’s RS232 port
- Safety Features:Anti-reverse connection
Our verdict“Perfect for adding Ethernet connectivity to RS232-based PLCs in control-focused environments demanding quick data exchange.”
How We Picked
The products in this roundup were evaluated based on performance benchmarks, communication speed, build quality, ease of integration, and overall value. We prioritized modules that support high data throughput suitable for demanding industrial environments. Compatibility with popular PLC systems was a key factor, as well as the availability of redundancy and advanced networking features. The ranking reflects a balance between maximum performance and practical usability, aiming to recommend options for different user needs—from small-scale installations to complex, high-speed networks.Factors to Consider When Choosing Plc Ethernet Module High Speed
Choosing the right high-speed PLC Ethernet module involves understanding several key factors that impact performance, reliability, and integration. While specifications matter, broader considerations like system compatibility, future scalability, and maintenance play vital roles in making an informed decision. Here are some factors to consider:Performance and Speed
Look for modules that support fast data transfer rates, ideally with gigabit Ethernet capabilities for high-speed applications. The throughput needs depend on your system’s data volume and latency requirements. Modules supporting industry-standard protocols like EtherNet/IP or PROFINET often deliver better performance in industrial settings. Remember, higher speed often comes with increased cost, but it can significantly reduce bottlenecks in data-heavy environments.
Compatibility and Protocol Support
Ensure the module is compatible with your existing PLC brand and series. Some modules are optimized for specific controllers, which simplifies integration and reduces setup time. Supporting multiple protocols can also future-proof your system, enabling easier upgrades or expansions. Beware of modules that require extensive configuration or proprietary interfaces, as these can complicate maintenance.
Redundancy and Reliability Features
High-speed networks demand reliability. Modules with dual Ethernet ports, automatic failover, and support for redundant networking protocols offer increased uptime. If your application is critical, investing in redundancy features can prevent costly downtime. However, these features typically come at a higher price and may require more complex setup.
Ease of Installation and Maintenance
Simpler, compact modules tend to be easier to install and troubleshoot, especially in tight spaces. Consider modular designs with clear wiring diagrams and accessible ports. Modules with remote management or diagnostic tools can save time during maintenance. Overly complex modules, while feature-rich, may require specialized skills for setup and upkeep.
Cost and Value
Balancing budget with features is essential. Premium modules offer advanced capabilities like security and redundancy but may be unnecessary for smaller or less critical projects. Conversely, cutting costs on a module that doesn’t meet speed or reliability requirements can lead to higher costs later. Evaluate your specific needs and choose a module that offers the best value without overpaying for features you won’t use.
Frequently Asked Questions
How do I know if a PLC Ethernet module supports my existing PLC system?
To determine compatibility, check the module’s supported protocols and connector types against your PLC system. Most manufacturers list compatible controllers and series on their product pages. It’s also helpful to verify whether the module is certified for your PLC brand, such as Allen Bradley, Omron, or Siemens, to ensure seamless integration and avoid potential communication issues.
Is gigabit Ethernet necessary for high-speed PLC communication?
Gigabit Ethernet can significantly improve data transfer rates in environments with large data volumes or high latency demands. However, for many standard industrial applications, 10/100 Mbps Ethernet may suffice. Consider your system’s current and future data needs—upgrading to gigabit might be worthwhile if you expect increased traffic or want to future-proof your setup.
What features should I prioritize if I need redundancy and high uptime?
Modules with dual Ethernet ports, automatic failover, and support for redundant networking protocols are essential for high-reliability systems. These features ensure continuous operation even if one network path fails. Keep in mind that redundancy features can add complexity and cost, so evaluate whether your application justifies these investments.
Are compact modules as reliable as larger, more feature-rich options?
Compact modules can be highly reliable, especially if designed for industrial environments, but may lack certain features like multiple ports or redundancy. The key is to choose a model with solid build quality and appropriate specifications for your application’s demands. For critical or high-speed tasks, a larger module with redundancy might be more suitable despite the size difference.
When should I consider investing in a premium high-speed PLC Ethernet module?
If your application involves large data throughput, real-time control, or mission-critical operations, investing in a premium module can pay off through enhanced performance, security, and reliability. For smaller or less demanding projects, a mid-range or budget-friendly module may suffice. Always match the module’s capabilities with your actual operational requirements to avoid overspending.
Conclusion
For users seeking the best overall performance, the Allen Bradley 1785-ENET/B offers unmatched robustness and compatibility. Those prioritizing cost-effective high speed should consider the 1756-ENBT EtherNet/IP Module for a solid balance of features and affordability. Premium buyers with demanding needs will find the AXC 1050 ideal thanks to its dual Ethernet ports and compact design, while beginners or smaller systems can benefit from simplified, straightforward modules like the Omron CJ1W-ETN21. Ultimately, your choice should align with your specific performance, compatibility, and budget considerations, ensuring your industrial network runs smoothly now and in the future.
