Convert timestamp to string with milliseconds showing.

[PhilGil]

I have two questions. The first is I need to know how to convert the timestamp that displays from "Get Date/Time in seconds" to a string format.  I found the vi that converts to string but it stops at seconds and cuts off the milliseconds. I wired true to the "Get seconds" terminal so I get the time in seconds, I just don't get the millisecond value. Also I need to know if the clock from "Get Date/Time in seconds", is synchronized (or shows the same time down to the millisecond) with the timestamp that shows in the CAN read vi. I need to have the clock/timestamp from the CAN read synchronized with the "Get Date/Time in seconds" clock/timestamp. I am trying to compare delays in the CAN so I need precision down to the millisecond.

[Dennis_Knutson]

Instead of Get Date/Time in Seconds, Use Format Date/Time String. To display hours, minutes, seconds, milliseconds, use a format string of %H:%M:%S%3u.

[tbob]

Use Format Date/Time String.  For the format code use %H%M%S%4u to get two digits for hours, two digits for minutes, two digits for seconds, then a decimal, and after the decimal you get 4 digits for fractions of a second.  Replace the 4 with a 3 to get milliseconds, or with a 1 to get tenths of a second.   You get the idea...  See attached vi.

[LV_Pro]

I had a long, incorrect, post.   Never mind,    as was said to me in an earlier post, not enough coffee for the LV_Pro today. Forgot all about doing it that way.

P.M.

Message Edited by LV_Pro on 07-20-2005 04:20 PM

[PhilGil]

I need to know how to synchronize the "Get Date/Time in seconds" timestamp with the timestamp that shows in the CAN read vi.  I am trying to compare delays in the CAN so I need to be able to look at the clock that I have running with my encoder and look at the clock running with CAN and see that they both display the exact same time.

[craigherdman]

PhilGil,

The problem with this approach is the timestamp value that is returned from the Get Date/Time VI is coming from your Windows PC whereas the timestamp that you see in your CAN frames comes from the CAN hardware. I'm not sure how different the values would be but they indeed are coming from two different sources. Do you happen to have a LabVIEW RT system?

Craig H.

[PhilGil]

Thanks for all the help. I have one more question. I am reading an encoder using DAQ digital channels.  I am outputing what the encoder reads to a text file. I have precision at .1 and I need to coerce the values to be at intervals of .5. example if the number is 2.8 i want to see 3 in the file or if the number is 1.3 i want 1.5.

[pincpanter]

Multiply by 2, then Round To Nearest, then divide by 2.

Paolo

[Kolesnikov]

How can i convert current time into the number of seconds since the beginning of the day? thanx)

[GerdW]

Hi Kolesnikov,

some simple math will help:

Next time you should create a new thread instead of highjacking a 9 year old one…