Siemens SIMATIC ET 200S - Diagnostic messages of the electronic modules

Commissioning and Diagnostics
6-64
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
6.2.4 Diagnostic messages of the electronic modules
Actions after a diagnosis message
Every diagnostic message leads to the following actions:
• The SF LED on the interface module comes on.
• Several simultaneous diagnostic messages are possible.
• Diagnoses are reported as diagnosis interrupts and can be read via data sets.
• After a diagnosis message it is saved in the diagnosis buffer of the I/O
controller.
• The OB 82 is called. If OB 82 is not available, the I/O controller goes into STOP
mode.
• Acknowledgment of the diagnostic interrupt (following this a new interrupt is
possible).
Causes of Errors and Remedies
The causes of the errors and the action to be taken when specific diagnostic
messages appear are described in Chapter 6.2.6.2.