Siemens SIMATIC S7-1200

Extended instructions
9.5 Interrupts
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
429
The DTL data weekday value in parameter SDT is ignored. Set a CPU's current date and
time using the "Set time of day" function in the "Online & diagnostics" view of an online CPU.
You must set the month, day of month, and year. STEP 7 calculates the interrupt period
based on the CPU date and time clock.
Note
The first hour of the day does not exist when changing from summer to winter (daylight
saving time). Use a start time within the second hour or use an additional time delay interrupt
within the first hour.
Table 9- 109 Condition code
RET_VAL (W#16#....)
Description
0000
No error
8090
Invalid OB_NR parameter
8091 Invalid SDT start time parameter:
(for example, a start time within the skipped hour at the start of
daylight savings time)
8092
Invalid PERIOD parameter
80A1 The start time is in the past.
(This error code only occurs with PERIOD = W #16#0000.)
9.5.3.2
CAN_TINT (Cancel time of day interrupt)
Table 9- 110 CAN_TINT (Cancel date and time of day interrupt)
LAD / FBD
SCL
Description
ret_val:=CAN_TINT(_int_in);
Cancels the start date and time
of day interrupt event for the
specified interrupt OB.
Table 9- 111 Data types for the parameters
Parameter and type
Data type
Description
OB_NR
IN
OB_TOD (INT)
OB number (accepts symbolic name)
RET_VAL
OUT
Int
Execution condition code