Siemens SIMATIC PCS 7 - Page 111

Interrupt details of modules with analog outputs
For modules with less than 8 channels/channel groups, the corresponding bytes for diagnostic
events for channel/channel group of the channels/channel groups not present are always 00H.
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Figure 8-12 Structure starting from byte x+8 for diagnostic interrupt (analog outputs)
Interrupt, error and system messages
8.3 S7 diagnostics
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB 111