My Opinion on IEC 61508: It Puts Safety First

View Comments: Threaded|Newest First|Oldest First
User Rank
Software safety key
naperlou   11/6/2012 10:25:48 AM
Rich, I sympathize  with you as far as the kids go.  It is tough. 

As far as safety, it is imperative in many of the systems we interact with in these times.  If safety is not built in, people will not trust them.  Fortunately we have standards like IEC 61508.  In aerospace, you have similar standard, like DO-254.  The safety record of those systems is very good. 

William K.
User Rank
IEC 61508
William K.   11/7/2012 8:54:52 PM
What the write-up does not include is just what sort of products the standard applies to. For our products it would seem that writing the control code so that any deviation from the correct sequence of actions stops everything may already be in compliance. That type of programming did not make any distinction between deviations that were unsafe and those that had no safety impact at all. Any deviation was a show-stopper.

But then I have also seen other safety rules, mostly hardware,  that seem to be aimed at drunks bent on self-destruction. Perhaps those standards should be revisited now.

Partner Zone
More Blogs
The most efficient and ecologically sound automation system may be "eco obsolete" — an older system sustained with obsolete parts.
Design News contributing writer Fred Eady strolls down the memory lane of the homebrew embedded WiFi designs he then wrote reference books around.
Digital design tools and 3D printing can be used to innovate new products and accelerate the development and commercialization cycle.
The ways companies and their outside product development partners work together and divvy up success are evolving radically. Here's what you need to know no matter if you are an engineer or executive.
One of the biggest walls in embedded software development is the integration of low-level drivers with higher-level middleware and application code, but silicon vendors are stepping up to bring it down.
Design News Webinar Series
10/1/2015 11:00 a.m. California / 2:00 p.m. New York
9/10/2015 11:00 a.m. California / 2:00 p.m. New York
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
10/20/2015 8:00 a.m. California / 11:00 a.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 5 - 9, Standards for the Internet of Things (IoT)
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7

Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service