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Digital Modules FAST - SPEED-Bus
323-1BH70 - DIO 16xDC 24V 0.5A > Diagnostic interrupt
6.5.2 Process interrupt
Local double word 8 of the
OB 40
6.5.3 Diagnostic interrupt
114
Depending to the system, the SFC 14 (DPRD_DAT) "Read consistent
data" cannot be used with this module.
Via the edge selection you may activate a process interrupt in your parameterization and
define on which edge of the input signal a process interrupt should be initialized. A
process interrupt causes a call of the OB 40. Within the OB 40 you may find the logical
basic address of the module that initialized the process interrupt by using the Local word
6. More detailed information about the initializing event is to find in the local double word
8.
The local double word 8 of the OB 40 has the following structure:
Lokalbyte
Bit 7 ... Bit 0
8
n
Bit 0: Edge at I+0.0
n
...
n
Bit 7: Edge at I+0.7
9
n
Bit 0: Edge at I+1.0
n
...
n
Bit 7: Edge at I+1.7
10
00h (fix)
11
00h (fix)
Via the parameterization (record set 7Fh) you may activate a global diagnostic interrupt
for the module. A diagnostic interrupt occurs when during a process interrupt execution in
OB 40 another process interrupt is thrown for the same event. The initialization of a diag-
nostic interrupt interrupts the recent process interrupt execution in OB 40 and branches in
OB 82 to diagnostic interrupt processing
cessing other events are occurring at other channels that may also cause a process res.
diagnostic interrupt, these are interim stored. After the end of the diagnostic interrupt pro-
cessing at first all interim stored diagnostic interrupts are processed in the sequence of
their occurrence and then all process interrupts. If a channel where currently a diagnostic
interrupt
is processed res. interim stored initializes further process interrupts, these
incoming
get lost. When a process interrupt for which a diagnostic interrupt
released is ready, the diagnostic interrupt processing is called again as diagnostic inter-
rupt
. All events of a channel between diagnostic interrupt
outgoing
rupt
are not stored and get lost. Within this time window (1. diagnostic inter-
outgoing
rupt
until last diagnostic interrupt
incoming
for every diagnostic interrupt
occurs.
. If during the diagnostic interrupt pro-
incoming
) the SF-LED of the CPU is on. Additionally
outgoing
an entry in the diagnostic buffer of the CPU
incoming/outgoing
VIPA System 300S
has been
incoming
and diagnostic inter-
incoming
HB140 | SM-DIO | | en | Rev. 16-43
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