Siemens SIMOCODE pro Function Manual page 26

Communication
2.1 PROFIBUS communication
Interrupts - diagnostic interrupt
Device faults or parameter errors are interrupt sources for diagnostic interrupts.
As soon as SIMOCODE pro sets a diagnostic interrupt, the OB 82 diagnostic interrupt will be
started in the SIMATIC S7.
Diagnosis interrupt - structure
The diagnostic interrupt has the following structure:
Figure 2-8
The first byte of the block for diagnostic interrupt can be shifted by 3 or 6 bytes depending on
the number of blocks for channel-related diagnostics.
You will find a description of the information contained in data record 1 in Chapter Detailed
messages of the slave diagnostics (Page 153).
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Structure of the diagnostic interrupt
SIMOCODE pro - Communication
Function Manual, 11/2018, A5E40508495002A/RS-AC/003