Value Description
0000h No error occurred.
8090h The input parameter OB_NR contains an illegal value.
8091h The input parameter MODE contains an illegal value.
8xyyh General error information
Ä
Chap. 4.2 ‘General and Specific Error Information RET_VAL’ page 66
14.1.31 SFC 41 - DIS_AIRT - Delaying interrupts
The SFC 41 DIS_AIRT (disable alarm interrupts) disables processing of interrupt OBs
and asynchronous fault OBs with a priority that is higher than the priority of the current
OB. You can issue multiple calls to the SFC 41. The operating system will count the
number of calls to the SFC 41. Processing of interrupt OBs is disabled until you issue an
SFC 42 EN_AIRT to enable all interrupt OBs and asynchronous fault OBs that were disa-
bled by means of SFC 41 or until processing of the current OB has been completed.
Any queued interrupt or asynchronous fault interrupts will be processed as soon as you
enable processing by means of the SFC 42 EN_AIRT or when processing of the current
OB has been completed.
Parameter Declaration Data type Memory area Description
RET_VAL OUTPUT INT I, Q, M, D, L Number of disable calls
(= number of calls to the SFC 41)
When the SFC has been completed the return value RET_VAL indicates the number of
disables, i.e. the number of calls to the SFC 41 (processing of all alarm interrupts is only
enabled again when RET_VAL = 0).
14.1.32 SFC 42 - EN_AIRT - Enabling delayed interrupts
The SFC 42 EN_AIRT (enable alarm interrupts) enables processing of high priority inter-
rupt OBs and asynchronous fault OBs.
Every disabled interrupt must be re-enabled by means of the SFC 42. If you have disa-
bled 5 different interrupts by means of 5 SFC 41 calls you must re-enable every alarm
interrupt by issuing 5 individual SFC 42 calls.
Parameter Declaration Data type Memory block Description
RET_VAL OUTPUT INT I, Q, M, D, L Number of disabled interrupts when the SFC 42
has been completed or the error code when an
error has occurred while the function was being
processed.
RET_VAL (Return value)
Description
Parameters
RET_VAL (Return value)
Description
Parameters
VIPA SPEED7
Integrated Standard
System Functions > SFC 42 - EN_AIRT - Enabling delayed interrupts
HB00 | OPL_SP7 | Operation list | en | 18-30 681
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