Siemens SIMATIC ET 200M Operating Instructions Manual page 209

Diagnostic interrupt
If there is a diagnosis event for channel / channel group 0 of a module, alongside a channel
error there could also be a module error. The entry is generated also in this case if the
diagnosis for the channel / channel 0 of the module has not been enabled.
Structure of the interrupt part
The interrupt part for the ET 200M is configured as follows (with IM 153-x without module
status an channel-related diagnosis the byte x = byte 9):
The bytes x to x+3 inform you of the interrupt type.
Figure 9-8
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
Structure of the interrupt status of the interrupt part
Interrupt, error and system messages
9.1 PROFIBUS DP
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