Commissioning and Diagnostics
6-9
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
Actions Following Diagnostic Message in S7 or DPV1 Mode
Every diagnostic message triggers the following actions:
In S7 or DPV1 mode, diagnoses are reported as diagnostic interrupts.
In DPV1 mode, diagnoses are also reported when the master CPU is in STOP
mode. The diagnostic frame also contains the module status and the
channel-specific diagnosis.
Following a diagnostic message, it is
– entered in the diagnostic frame as a diagnostic interrupt block (only one
interrupt at any one time)
– stored in the diagnostics buffer of the master CPU
The SF LED on the IM 153-x lights up.
OB 82 is called in the master CPU. If OB 82 is not available, the master CPU
enters the STOP mode.
Acknowledgment of the diagnostic interrupt by the master CPU (a new
diagnostic interrupt is then possible).
Actions Following Diagnostic Message in DPV0 Mode
The error is entered in the channel-specific diagnosis in the diagnostic frame:
The SF LED on the IM 153-x lights up.
Several diagnostic messages can be issued at the same time.
Error Causes and Corrective Measures
The error causes for diagnostic messages and possible corrective measures are
described in Section 6.4.7.
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