Channel-Specific Diagnostics - Siemens SIMATIC ET 200PA SMART Operating Instructions Manual

8.3.8

Channel-specific diagnostics

Definition
The channel-related diagnostics gives information about channel errors of modules and
represents a detailing of the identifier-related diagnostics.
The channel-related diagnostic information follows the module status.
The channel-related diagnostics does not influence the module status.
Note
Activating the diagnostic interrupt
The diagnostic interrupt must be activated for each module in the parameter assignment dialog
of the respective module!
Channel-related diagnostics
The maximum number of channel-related diagnostics is limited by the maximum total length of
the slave diagnostics of 96 bytes. The length of slave diagnostic data is determined by the
number of currently pending channel-related diagnostics.
Note
Errors that affect all the channels of a module (e.g. the supply voltage of the module fails) will
be mapped onto channel 0 in the channel-related diagnostics.
This then reduces the number of channel-related diagnoses and prevents a "diagnostic
overflow".
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB
Interrupt, error and system messages
8.3 S7 diagnostics
99