Siemens S7-1200 - Cyclic Interrupts; SET_CINT (Set Cyclic Interrupt Parameters) Instruction

Extended instructions
8.4 Interrupts
S7-1200 Programmable controller
334 System Manual, 03/2014, A5E02486680-AG
DETACH operation
Use the DETACH instruction to detach either a particular event or all events from a particular
OB. If an EVENT is specified, then only this one event is detached from the specified
OB_NR; any other events currently attached to this OB_NR will remain attached. If no
EVENT is specified, then all events currently attached to OB_NR will be detached.
Condition codes
Table 8- 87 Condition codes
RET_VAL (W#16#....)
ENO
Description
0000
1
No error
0001
1
Nothing to Detach (DETACH only)
8090
0
OB does not exist
8091
0
OB is wrong type
8093
0
Event does not exist
8.4.2
Cyclic interrupts
8.4.2.1
SET_CINT (Set cyclic interrupt parameters) instruction
Table 8- 88 SET_CINT (Set cyclic interrupt parameters)
LAD / FBD
SCL
Description
ret_val := SET_CINT(
ob_nr:=_int_in_,
cycle:=_udint_in_,
phase:=_udint_in_);
Set the specified interrupt OB to begin cyclic execution
that interrupts the program scan.
Table 8- 89 Data types for the parameters
Parameter and type
Data type
Description
OB_NR
IN
OB_CYCLIC
OB number (accepts symbolic name)
CYCLE
IN
UDInt
Time interval, in microseconds
PHASE IN UDInt Phase shift, in microseconds
RET_VAL
OUT
Int
Execution condition code