During the switchover from daylight-saving to standard time the local time is put back one
hour. This, however, means that one hour is run through twice. (For CE(S)T the designa-
tors 2A and 2B apply). For an LT (local time) within this hour, no unique identification rela-
tive to a base time is possible. FC LT_BT receives an LT as an input parameter and must
decide whether the time is standard or daylight-saving before converting it to BT. If the LT
is within the double hour, the LT is interpreted as standard time. This is reported with
return value 2 or 3.
FC 62 LT_BT can be called in any priority class.
Internally, FC 62 uses the following functions. These functions must be loaded in your
project with the numbers shown here. FC1 (AD_DT_TM), FC7 (DT_DAY), FC35
(SB_DT_TM)
Output Values / Errors
RET_VAL LT Description
0 Base time Block executed error-free
1 Base time No error, but date jump
2 Base time The LT at the input is within
the "double" hour
3 Base time As 2, also date jump
4 Base time The LT at the input is within
the "forbidden" hour
5 Base time As 4, also date jump
8082 DT#90-01-01-0:0:0 Invalid data in the rule data
block
15.6.4 FC 63 - S_LTINT - Set time interrupt in local time
The FC sets the required time-of-day interrupt at the set time. This time is output in local
time.
Parameters
Parameter Declaration Data type Description
OB_NR INPUT INT No of the OB to be started (permitted 10 – 17)
SDT INPUT BLOCK_DB Start date and time-of-day in local time (see SFC28)
PERIOD INPUT INT Period from start point SDT:
n W#16#0000 = once
n W#16#0201 = every minute
n W#16#0401 = every hour
n W#16#1001 = daily
n W#16#1201 = weekly
n W#16#1401 = monthly
n W#16#1801 = annually
n W#16#2001 = at end of month
"Double Hour"
Calling OBs
Call Environment
Description
VIPA SPEED7
Standard
Time Functions > FC 63 - S_LTINT - Set time interrupt in local time
HB00 | OPL_SP7 | Operation list | en | 18-30 881
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