Siemens SIMATIC ET 200M Operating Instructions Manual page 218

Interrupt, error and system messages
9.1 PROFIBUS DP
9.1.3.11 Evaluating interrups from station diagnosis
The structure of the station diagnosis is the same as the structure of the interrupt section.
Interrupts with S7 / M7 DP master or DPV1 master
The ET 200M supports the following interrupts:
● Diagnostic interrupt
● Hardware interrupt
● Removing / insertion interrupt
These interrupts can be evaluated using an S7 / M7 DP master or DPV1 master. In the event
of an interrupt, interrupt OBs are executed automatically in the master CPU (refer to the
"System and Standard Functions for S7-300/400
(http://support.automation.siemens.com/WW/view/en/1214574)" programming manual).
Inserting / removing interrupts with S7 / M7 DP master or DPV1 master
If you use the ET 200M with "Change during Operation" on an S7 / M7 DP master or a DPV1
master, the system behaves as follows:
● When removing a module the IM 153-x reports a removing interrupt on the DP master
● If you insert a module that corresponds to the configuration, the IM 153-x reports an
● If you insert a module in a non-configured slot, the ET 200M behaves as follows:
● If you insert a different module than configured:
Faults when removing and inserting will be tolerated for up to 1 second. This means, that in
such a case the output values will not change within the tolerance time.
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which executes the OB 83. In the OB 83 you program the desired response to the
removing event.
With I/O access the OB 122 (I/O access error) is called in the DP master CPU.
inserting interrupt on the DP master (call OB 83 with respective diagnostic buffer entry)
and configures the module in accordance with the saved configuration.
– In S7 mode the IM 153-x does not report an inserting interrupt.
– In DPV1 mode the IM 153-x reports an inserting interrupt.
– then the IM 153-x reports an inserting mode to the DP master (call OB 83 with
respective diagnostic buffer entry); but ignores this non-configured module.
– The module diagnosis is stopped, and you can read out the slot in which the wrong
module is inserted.
– the SF LED indicates the error.
Note
If you insert or remove a dummy module DM 370, then no inserting or removing
interrupt is triggered.
WARNING
Operating Instructions, 12/2008, EWA-4NEB780600602-08
ET 200M