User's Manual

Table Of Contents
Nonvolatile Parameter Database
AT+i Programmer‘s Manual Version 8.32 34-56
34.5.13 +iDSTD Define Daylight Savings Transition Rule
Syntax: AT+iDSTD=DST_rule Permanently sets the daylight savings time
transition rule.
Parameters: DST_rule ::= ―<HH1.DD1.MM1>;<HH2.DD2.MM2>‖
Where, <HH1.DD1.MM1> indicates the
date when Daylight Saving
Time starts and
<HH2.DD2.MM2> indicates
the date when Daylight
Saving Time ends.
HHn ::= Full Hour (two
digits).
DDn ::= Either specific day, or <F/L><Day of Week>.
<F/L> ::= F = First, L = Last Day of the month.
For example: FSun indicates the First
Sunday of the month.
<Day of Week> ::= {―Sun‖, ―Mon‖, ―Tue‖, ―Wed‖,
―Thu‖, ―Fri‖, ―Sat‖}.
MMn ::= Month.
Command Options:
DST_rule=’’ Empty no Daylight Saving Time definition is applied.
DST_rule=<dst> Daylight Savings rule defined in dst will be applied
to the time retrieved from the Time Server when
reporting the current time.
Default: Empty. No Daylight Saving Time is applied.
Result code:
I/OK
AT+iDSTD~DST_rule Temporarily set the Daylight Saving Time
Definition to DST_rule . The permanent value will
be restored after completing the next session,
whether the session was successful or not.
AT+iDSTD? Report the current value of the Daylight Saving
Time Definition.
The reply is followed by I/OK.
AT+iDSTD=? Returns the message ‗String‘.
The reply is followed by I/OK.