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To: Subscribers PLCopen Newsletter

Subject: PLCopen newsletter Issue March 2008  

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Welcome to the PLCopen electronic newsletter.

You receive this message because you subscribed to the PLCopen electronic newsletter via the PLCopen website www.plcopen.org.  

For comments or additional information check either www.plcopen.org or send an email to wnunes@plcopen.org.

To unsubscribe, send an email to wnunes@plcopen.org with the message to unsubscribe.  

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PLCopen Newsletter - Issue March 2008.

 

1. PLCopen releases Safety Specification part 2 – User Guidelines  

2. PLCopen XML – accepted by AutomationML

3. Meet us at the Hanover Fair, Germany

 

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1. PLCopen releases Safety Specification part 2 – User Guidelines  

The PLCopen Technical Committee 5 (TC5) Safety Software User Guidelines is a reference for control people implementing safety control systems and is available at no cost on the PLCopen WEB site (www.plcopen.org). This is a companion publication to PLCopen Technical Committee 5 - Safety Software Technical Specification; also available on the WEB site. This document illustrates the ease of use of the defined function blocks in real life applications.  

The Safety Software User Guidelines document provides a wealth of information for control engineers on safety applications including: Creating a Safety Plan, Terms and Definitions, Example of Safety Functions in a Production Line, Description of the PLCopen Function Blocks, PLCopen Function Blocks and Connection to the Periphery, Graphical Overview of Safety Application Examples, Use of Safe Drives, Diagnostics Concepts, Safe Motion with an I/O Interface, and Two-Hand Control.  

The independent association PLCopen, together with its members and external safety related organizations, defined safety function blocks within the IEC 61131-3 development environments. Safety can now be implemented using a standard set of function blocks. This supports the integration of logic and motion application development with safety. This combination helps developers to integrate safety related functionality into their systems, even from the beginning of the development cycle. This approach contributes to the understanding of safety, as well as reducing the certification time and costs.  

The combination of logic, motion, and safety in one environment provides the user with a harmonized view of the total application within one environment. And with multiple implementations, this is also valid across platforms. This means less educational efforts, and simpler transfer of knowledge and application software between different controls. Also, it tackles the ‘not-invented-here syndrome’, which often is a cause of errors and additional costs. By using tested functionality, and support in the programming environment, including language definition with subsets of functionality, one is able to create safety related application programs for easy commissioning.  

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2. PLCopen XML – accepted by AutomationML  

The PLCopen Technical Committee (TC6) - XML opened up the IEC 61131-3 development environments by specifying the XML schema for this. As such it provides an open interface to other software tools. PLCopen TC6 published their XML schema and documentation in June 2005 as version 1.01. After that, feedback came in from companies starting to implement this specification, not only from Europe but also from Japan.  

With a new initiative called AutomationML we have come to a new phase. The companies Daimler, ABB, KUKA, Rockwell, Siemens, netAllied and Zühlke together with the University of Karlsruhe and the University of Magdeburg jointly define and standardize the Automation Markup Language (AutomationML™) as an intermediate format for the Digital Factory. For more information check www.automationML.org.

One of the formats that have been accepted in this group is PLCopen XML for the sequencing. In order to optimize this interface additional changes to the specification are proposed.  

For this reason the PLCopen members will meet again on May 6 at Mercedes Benz in Sindelfingen, to support this new activity for TC6. The goal will be to update the existing specification, including all accepted changes and proposals.

If you are interested in joining this meeting, just let us know.  

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3. Meet us at the Hanover Fair, Germany

PLCopen has its booth during the upcoming Hanover Fair from April 21-25 in Hall 9 – H68. Eelco van der Wal , as Managing Director, will be at the booth during the whole event.

Feel invited to step by at the booth and discuss your benefits in using the PLCopen specifications.

Or visit us to check the status of the specifications and the new PLCopen activities, while enjoying a Dutch coffee, or drink one of the many beers from all over the world to choose from while using your own PLCopener which you can keep as gift.  

Hope to see you all at this event.  

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Kind regards,  

Eelco van der Wal
Managing Director PLCopen  

PO Box 3009
NL-4200 EA Gorinchem, the Netherlands  

tel.: +31-183-660261
fax: +31-183-664821  

email: evdwal@plcopen.org
Do not forget to look at http://www.plcopen.org