Triggering A Swapping Interrupt; Alarms - Siemens SIMATIC ET 200SP Manual

Interrupts, diagnostics, error, and system messages

5.3 Alarms

5.2.3

Triggering a swapping interrupt

Triggering a remove/insert interrupt
In the event of a remove/insert interrupt, the CPU interrupts processing of the user program
and processes the remove/insert interrupt (OB 83). The event which led to the interrupt is
entered in the start information of the remove/insert interrupt (OB 83).
Note
Parameter assignment error after removal/insertion
If you write data records from the user program to the modules of the distributed I/O, make
sure that these modules actually exist and are available. You can do this by evaluating the
remove/insert interrupt (OB83). After inserting a module, the remove/insert interrupt (OB83)
is not called until the module has started up and its parameters are assigned. This ensures
that data record operations can be executed without errors.
5.3 Alarms
Actions after a diagnostics alarm
There can be more than one diagnostic alarm at a given time. Actions initiated by
diagnostics alarms:
● The ER LED on the interface module flashes.
● Diagnostic data is reported as diagnostic interrupts to the CPU of the IO controller and
can be read via data records.
● Incoming diagnostics alarms are saved to the diagnostics buffer of the I/O controller.
● The diagnostics interrupt (OB 82) is called. If the diagnostics interrupt (OB 82) is not
available, the I/O controller goes into STOP mode.
You can find more information on this topic in the STEP 7 online help.
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IM 155-6 PN HS interface module (6ES7155-6AU00-0DN0)
Manual, 09/2016, A5E34928647-AA