Siemens SIMATIC ET 200iSP Operating Instructions Manual page 158

Commissioning and Diagnostics
6.8 Diagnostics with STEP 7
Triggering of a diagnostic interrupt
With an incoming or outgoing event (wire break, for example) the module triggers a diagnostic
interrupt upon "Release: Diagnostic Interrupt".
The CPU interrupts the processing of the user program and processes the diagnostics block
OB82. The event that led to the triggering of the interrupt is entered in the start information of
the OB82.
Triggering of a Hardware Interrupt
In the event of a hardware interrupt the CPU interrupts the processing of the user program
and processes the hardware interrupt block OB40.
The channel of the module that triggered the hardware interrupt is entered in the start
information of the OB40 in the tag OB40_POINT_ADDR. The following Fig. shows the
assignment to the bits of the local data doubleword 8.
● Analog input modules
Figure 6-5
Note
For a description of the OB40, refer to the
manual. System and standard functions
en/1214574)
Triggering of a remove/insert interrupt
Remove/insert interrupts are only supported by S7-400 or in DPV1 operation.
The CPU (S7-400) interrupts the processing of the user program and processes the diagnostic
block OB83. The event which led to the triggering of the interrupt is entered in the start
information of the OB83.
Triggering of an Update Interrupt
Update interrupts are only supported in DPV1 operation.
158
Interrupts from analog input modules
System and Standard Functions reference
(http://support.automation.siemens.com/WW/view/
Operating Instructions, 11/2017, A5E00247483-07
ET 200iSP