Eye Current

It's About Time

Next week on March 11th we will set out clocks ahead 1 hour. Some computers will update the time then, others will do it on April 1st, yet others won't change at all.

Most DCS and control systems are not allowed to process automatic updates because of security issues. Microsoft Windows for most desktop machines is typically automatically upgraded automatically. Changing the time by an hour can raise havoc with historian databases.

Usually it is a good idea to disable the automatic Daylight saving facility. Some of us are going to find that when we maually set the time on March 11th, that the operating system will move the time forward again on April 1st.

Update: Microsoft has a page to help assist in updating the time.

posted by Ray L. @ 11:57 AM