GSV wallclocktime problem

using a 1768-L45
when I use a GSV / class name WallClockTime / attribute LocalDateTime
I get the year / month / day / hour / minute / second as expected except that the hours are always 5 hours advanced. So if it is 10 AM I get 15 for the hours. Seems like I am always getting GMT, and I would like to get local time.
PLC CPU date/time is set correctly and eastern time zone (UTC -05:00)is set. is there a way to get the local hours without doing some math on the hour value.
Thanks in advance for your help.

What method do you use to set the time? I had similar problems when the laptop's time zone was different from the PLC's.

Some info here.

OK found it

There were two GSV's in the program. one with attribute DateTime and one with attribute LocalDateTime and both writing to the same tag.
Thanks for your help.

And to clarify for anyone else reading this thread. "DateTime" is UTC. LocalDateTime is adjusting for timezone and DST. Typically you want the LocalDateTime.

OG

Operaghost said:

And to clarify for anyone else reading this thread. "DateTime" is UTC. LocalDateTime is adjusting for timezone and DST. Typically you want the LocalDateTime.

OG

Click to expand...

The "LocalDateTime" is not adjusted for DST, unless you set it up and enable it. The RTC does not do DST adjustment automatically. It only adjusts for timezone, based on the configuration.

To make the RTC do DST adjustment, you have to "ApplyDST" (INT : non-zero) and not "ApplyDST" (INT : zero) on the dates you need it it adjust, the adjustment is a number of minutes you have to preset into DSTAdjustment

Many people believe that the DST adjustment is "built-in" - it isn't, it's an offset you have to control with code.