Siemens SIMATIC ET 200M Operating Instructions Manual page 210

Interrupt, error and system messages
9.1 PROFIBUS DP
Additional interrupt information
The bytes x+4 to x+7 inform you of the interrupt cause. They correspond to the diagnostic
data record 0 in
The bytes x+4 to x+7 as well as x+8 to x+19 correspond to the diagnostic data record 1 in
STEP 7
Figure 9-9
208
STEP 7
.
.
Additional interrupt information for diagnostic interrupts of digital and analog modules
Operating Instructions, 12/2008, EWA-4NEB780600602-08
ET 200M