Logo automation networks

Automation Networks

Profinet vs Ethernet/IP

Profinet and Ethernet/IP are both industrial Ethernet communication protocols used in automation and control systems, but they are developed by different organizations and have some distinct features and applications. Here’s a comparison between the two:


  1. Origin and Development:
    • Profinet is developed by PROFIBUS & PROFINET International (PI). It is widely used in Europe and globally in automation technology.
  2. Protocol Structure:
    • Based on standard Ethernet, Profinet uses TCP/IP for non-time-critical data and Real-Time (RT) Ethernet for time-critical data. It also offers Isochronous Real-Time (IRT) communication for highly demanding applications (like motion control) where timing precision is critical.
  3. Performance:
    • Profinet is known for its high-speed data transfer and real-time capabilities. It can support IRT with cycle times as low as 31.25 microseconds.
  4. Configuration and Diagnostics:
    • Features extensive and sophisticated diagnostic capabilities.
    • Offers a flexible and comprehensive network configuration, typically using engineering tools like TIA Portal from Siemens.
  5. Interoperability:
    • Provides seamless integration with PROFIBUS networks, allowing a mixed architecture with both Profinet and PROFIBUS devices.
  6. Applications:
    • Often favored in complex automation systems, particularly those that require precise synchronization and fast data exchange, such as in automotive manufacturing, robotics, and motion control applications.


  1. Origin and Development:
    • Developed by the Open DeviceNet Vendor Association (ODVA) and is widely used in North America and globally. It is especially prevalent in systems using Rockwell Automation/Allen-Bradley products.
  2. Protocol Structure:
    • Also based on standard Ethernet, Ethernet/IP uses TCP/IP and UDP/IP (User Datagram Protocol/Internet Protocol) for transmitting data. It integrates the Common Industrial Protocol (CIP) for industrial automation applications.
  3. Performance:
    • Offers real-time capabilities, although typically not as fast as Profinet’s IRT for ultra-high-speed requirements.
  4. Configuration and Diagnostics:
    • Supports comprehensive diagnostics, but the tools and approach might differ from Profinet.
    • Network configuration can be done using Rockwell’s integrated engineering tools.
  5. Interoperability:
    • Designed for interoperability with other CIP networks like DeviceNet and ControlNet.
  6. Applications:
    • Commonly used in a broad range of industrial applications, including manufacturing, process control, and other applications where integration with Rockwell Automation products is beneficial.

Key Differences

  • Protocol Foundation: Both use Ethernet but differ in the specific real-time extensions and protocols (IRT for Profinet and CIP for Ethernet/IP).
  • Preferred Geographical Use and Integration: Profinet is more common in Europe and in systems where PROFIBUS integration is required, while Ethernet/IP is prevalent in North America and in environments with a strong presence of Rockwell Automation equipment.
  • Real-Time Performance: Profinet generally offers faster real-time performance, particularly with its IRT feature, making it suitable for high-speed and precision-demanding applications.

Both Profinet and Ethernet/IP are powerful and capable protocols for industrial automation, and the choice between them often depends on the specific requirements of the application, existing infrastructure, and regional preferences.

ANC-100e Ethernet IP to AB's DH+ Converter

The Automation Networks ANC-100e communicates with all SCADA, HMI, PLC programming with direct Ethernet/IP access to the DH+ network and stations. 

ANC-100e has similar replacement features as the Controllogix 1756-DHRIO / 1756-ENBT, and AB 1784 Interface Cards: 1784-U2DHP, 1784-KTx, 1784-PKTx, 1784-PCMK and Prosoft AN-X2-DHRIO Converters.

$1,295 USD List. Jan. 1, 2024

Overnight Shipping Available

ANC-120e USB to AB's DH+

The ANC-120e is an economical and high performance USB-to-Allen-Bradley Data Highway Plus converter interfacing major HMI, SCADA, PLC Programming packages to Devices on DH+. Its features significantly outperform AB’s 1784-U2DHP PLC Programming Cable operating at 12 Mg USB speed with the Controllogix Ethernet/IP Driver.

The ANC-120e works with all SCADA, MMI, PLC programming packages installed on your PC with USB direct access to the DH+ network and stations. These packages include RSLINX/LOGIX Classic & Enterprise with RSLOGIX 5/500, Wonderware DAServer & TCP/IO Server, Citect, and Kepware using Controllogix Ethernet/IP Drivers. 

$1,295 USD List. Jan 1, 2024

Overnight Shipping Available

Scroll to Top