Siemens SIMATIC ET 200PA SMART Operating Instructions Manual page 112

Interrupt, error and system messages
8.3 S7 diagnostics
Interrupt details of input or output modules with HART
For modules with 8 channels, the diagnostic events for channel 4...7, thus bytes x+20 to x+27
are present.
Figure 8-13
112
Structure starting from byte x+8 for diagnostic interrupt (input or output modules with
HART)
Operating Instructions, 06/2019, A5E34192013-AB
ET 200PA SMART