Siemens SIMATIC ET 200PA SMART Operating Instructions Manual page 57

Actions after a diagnostic message of the ET 200PA SMART
Every diagnostic message triggers the following actions:
● The diagnostics are signaled as diagnostic interrupts.
● The module status and the channel-related diagnostics are also available in the diagnostic
frame.
● After a diagnostic message, the message is entered in the diagnostic frame as a diagnostic
interrupt block (only one interrupt at a given time) and stored in the diagnostic buffer of the
CPU.
● The SF LED on the IM 650 is lit.
● OB 82 is called in the CPU. If OB 82 is not available, the CPU goes to STOP state.
● The diagnostic is signaled to the PCS 7 module driver.
● Acknowledgement of the diagnostic interrupt by the CPU (a new diagnostic interrupt is
possible afterwards)
Causes of errors and corrective measures
The causes of errors that trigger the diagnostics messages and possible corrective measures
are described in section "Interrupt, error and system messages (Page 87)".
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB
Commissioning
5.1 PROFIBUS DP
57