An Overview of Ethernet Powerlink

Ethernet Powerlink is a real-time data protocol for standard Ethernet. It is managed by the Ethernet POWERLINK Standardization Group and was first introduced by the Austrian automation company B&R in 2001. This article will discuss its key features and the various benefits and drawbacks it brings. We’ll also discuss Energex transitional charges, device profiles, and Servo/motion technology. This article provides an overview of Ethernet Powerlink.

ETHERNET Powerlink protocol

The ETHERNET POWERLINK protocol is a low-latency, multi-protocol wireless communication protocol. Its data structure is based on CANopen and reuses many of the same design principles. Unlike TCP/IP, however, Ethernet POWERLINK supports cyclic and cross-traffic communication. It also has an isochronous phase to avoid collisions, and a Managing Node (MN) that controls controlled nodes polls them cyclically.

The protocol works on Ethernet networks with different speeds. This allows for devices of different data rates to mix. For example, a device that supports 10 Mbit/s can be expanded to 100 Mbit/s using Ethernet Powerlink. In contrast, other field-bus networks rely on the slowest device. ETHERNET Powerlink is open, predictable, and scalable. Therefore, it is compatible with many devices and applications.

Energex transitional charges

Energex transitional charges are fees that Powerlink pays to its parent, Energex, for entry and exit services. In the case of Sunrise Powerlink, these fees are based on the agreement between Energex and AER to procure at least 33 per cent of its electricity from renewable sources by 2020. The AER must notify Powerlink of any change to the Sunrise Powerlink as soon as possible.

CANopen device profiles

CANopen device profiles specify properties for various automation technology devices. These specifications are structured as a dictionary of functions and parameters for standard types of devices. These device profiles are defined in the object directory and provide a standard means of interoperability and data exchange for different manufacturers’ devices. CANopen device profiles are defined for both digital and analog I/O devices as well as drives and controllers. They are described in ASCII format.

The OD is divided into sections, with 0x1000-0x1FFF reserved for communication objects. Entries starting with 0x6000 describe device-specific objects. This specification is required by all POWERLINK devices to ensure compatibility. CANopen device profiles provide flexible and proven solutions from various manufacturers. This enables the integration of field devices with Ethernet on the factory floor. With CANopen device profiles, manufacturers can easily add functionality to existing networks.

Servo/motion technology with ETHERNET Powerlink

Whether you are an automation designer or a manufacturer, you’ve probably considered integrating servo/motion with ETHERNET Powerlink. This new technology provides greater system performance and ease-of-use, all while reducing cost and installation time. The benefits of ETHERNET Powerlink include a more efficient installation process, faster build and commissioning, and fewer parts and components to replace.

POWERLINK provides high-bandwidth and high-performance data and control over a common network infrastructure. Unlike proprietary technology, POWERLINK provides real-time control, deterministic behavior, and network security as standard. In addition, POWERLINK is free of any intellectual property rights and patents. POWERLINK enables high-performance motion control, ensuring safety and reliability. These attributes make POWERLINK an excellent choice for servo/motion applications.