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5. CONFIGURATION

When a rising edge occurs at the REQUEST input, the function block will write the new DATEANDTIME values on the

clock. If the writing is successfully done, the DONE output will be equal to TRUE. Otherwise, the ERROR output will be equal

to TRUE and the error will appear in the STATUS variable.

Utilization example in ST language:

PROGRAM UserPrg

VAR

SetDateAndTime : SetDateAndTime;

xRequest : BOOL;

DateAndTime : EXTENDED_DATE_AND_TIME;

xDone : BOOL;

xExec : BOOL;

xError : BOOL;

xStatus : RTC_STATUS;

END_VAR

--------------------------------------------------------------------------

IF xRequest THEN

SetDateAndTime.REQUEST:=TRUE;

SetDateAndTime.DATEANDTIME:=DateAndTime;

xRequest:= FALSE;

END_IF

SetDateAndTime();

SetDateAndTime.REQUEST:=FALSE;

IF SetDateAndTime.DONE THEN

xExec:=SetDateAndTime.EXEC;

xError:=SetDateAndTime.ERROR;

xStatus:=SetDateAndTime.STATUS;

END_IF

ATTENTION

If you try to write time values outside the range of the RTC, the values are converted to

valid values, provided they do not exceed the valid range of 01/01/2000 to 12/31/2035. For

example, if the user attempts to write the value 2000 ms, it will be converted to 2 seconds,

write the value 100 seconds, it will be converted to 1 min and 40 seconds. If the type value

of 30 hours, it is converted to 1 day and 6 hours, and so on.

5.8.1.2.2. SetTimeZone

The following function block makes the writing of the time zone settings:

Figure 132: Writing of the Time zone Settings

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