Network safety standard: European standard EN 50325-5

A new safety protocol is published as a European standard and is available as EN 50325-5.


The CANopen Safety protocol (CiA 304) developed by CAN in Automation (CiA), international users’ and manufacturers group, is published as an European standard and available as EN 50325–5 from the European Committee for Electrotechnical Standardization (CENELEC) and any National body, CiA announced from Nuremberg, Germany on Sept. 9. The CANopen Safety protocol is an addition to the CANopen protocol standardized in EN 50325–4, also known as CiA 301.

CANopen Safety is designed to allow safety-related communication based on CAN according to IEC/EN 61508. The German TÜV has approved the protocol for use for systems requiring Safety Integrity Level 3 (SIL 3). Safety-related devices use the Safety-related Data Object (SRDO) service, which allows one-to-many communication relations. The SRDO messages are periodically broadcast in the network and any other safety-related device interested in the data can use it without the need of a centralized master. An SRDO consists of two CAN messages where the first CAN message contains the regular data and second CAN message is transmitted on a different identifier with the data content bit-wise inverted. This makes the protocol very efficient as it allows the use of small and cheap micro-controllers as no complicated CRC is used, CiA said.

The first ready-to-use implementations of CANopen Safety are available: The TÜV approved CANopen Safety Chip (CSC02) available from CiA implements the CANopen Safety protocol in a single chip.

The CSC02 allows easy integration of the CANopen Safety protocol into safety-related devices. The first commercial product available that uses the CSC02 is the safety-related encoder family by Posital.

CAN in Automation

- Also read:

How to choose a CANbus industrial controller;

Industrial networks: CAN, CANopen find new applications, including wind power; and

Control Engineering Networks Product Channel.

- Mark T. Hoske, Control Engineering,, CFE Media,

No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
A cool solution: Collaboration, chemistry leads to foundry coat product development; See the 2015 Product of the Year Finalists
Raising the standard: What's new with NFPA 70E; A global view of manufacturing; Maintenance data; Fit bearings properly
Sister act: Building on their father's legacy, a new generation moves Bales Metal Surface Solutions forward; Meet the 2015 Engineering Leaders Under 40
Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again
Pipeline vulnerabilities? Securing hydrocarbon transit; Predictive analytics hit the mainstream; Dirty pipelines decrease flow, production—pig your line; Ensuring pipeline physical and cyber security
Upgrading secondary control systems; Keeping enclosures conditioned; Diagnostics increase equipment uptime; Mechatronics simplifies machine design
Designing positive-energy buildings; Ensuring power quality; Complying with NFPA 110; Minimizing arc flash hazards
Building high availability into industrial computers; Of key metrics and myth busting; The truth about five common VFD myths

Annual Salary Survey

After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.

The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.

Read more: 2014 Salary Survey: Confidence rises amid the challenges

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.