SERCOS-III combines real-time and Ethernet

Stuttgart, Germany—Interests Group SERCOS (IGS) interface e.V. recently started a project to link its existing SERCOS interface and Ethernet to form SERCOS-III. The organization reported on its efforts at the recent SPS/IPC/Drives 2003 show.


Stuttgart, Germany— Interests Group SERCOS (IGS) interface e.V. recently started a project to link its existing SERCOS interface and Ethernet to form SERCOS-III. The organization reported on its efforts at the recent SPS/IPC/Drives 2003 show.

SERCOS-III is based on the established real time mechanisms of the SERCOS interface, which continues to work on the principle of cyclic data transfer with an exact time pattern. SERCOS says hardware-based synchronization is the indispensable prerequisite for reliably realizing motion applications, such as electronic line shafts in printing machines, packaging machines, or multi-axes machine tools.

SERCOS-III has been defined so any standard IP telegram, such as TCP/IP, can be transmitted in a non-real-time time slot, moving in parallel to the real-time data transfer required for motion control. The SERCOS-III controller is able to exchange these telegrams with super-ordinate devices in the network. As a result, SERCOS-III combines the established real-time mechanisms and its diagnostic capabilities with the universal communications available on Ethernet.

Consequently, SERCOS-III is not only an open interface, but is also an all-purpose automation interface, similar to today’s increasingly common, direct integration of I/O devices, electric-hydraulic axes, frequency converters and servo drives. SERCOS-III is being defined so that real-time communication will be compatible with the established SERCOS mechanisms, which means that upgrading existing software solutions will be possible at low cost and minimal required effort.

An important goal of the SERCOS-III project is reducing of interface costs per node by offering low-priced and powerful hardware components. Various hardware options are being examined, such as an FPGA-based controller and a multi-protocol communication controller. These considerations will be finalized in the next several months. Likewise, the rough technical concept of SERCOS-III has been worked out and verified, and IGS reports that the first SERCOS-III prototypes will be available in 2005.

Control Engineering Daily News Desk
Jim Montague, news editor

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Controller programming; Safety networks; Enclosure design; Power quality; Safety integrity levels; Increasing process efficiency
Additive manufacturing benefits; HMI and sensor tips; System integrator advice; Innovations from the industry
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me