This function block of the CAA_DTUtil.library reads the realtime clock. It returns the time of the local time zone (i.e. a possible switch to summer/standard time will be regarded)

The current time zone switch can be defined by „DTU.SetTimeZoneInformation“.

If a switch to summer/standard time has become necessary since the last polling of the time, this is done automatically.

At the start of the module the outputs „dtDateAndTime“ and „eTimeZone“ are reset.  (DT#1970-01-01-00:00 and RTCLK_UNKNOWN). After successful operation they will contain the current local time.