Interrupts; Trigger A Diagnostic Interrupt - Siemens SIMATIC ET 200SP Manual

Interrupts/diagnostic messages

5.3 Interrupts

5.3 Interrupts
5.3.1

Trigger a diagnostic interrupt

Enabling the diagnostic interrupts
You enable the diagnostic interrupt for wire break and the diagnostic interrupts for additional
errors in the basic parameters during device configuration.
A list of all errors that can trigger a diagnostic interrupt is available at Cause of the error
triggering a diagnostic interrupt (Page 37).
Reactions to a diagnostic interrupt
The following happens when an event occurs that triggers a diagnostic interrupt:
● The DIAG LED flashes red.
● The S7-1500 CPU interrupts the processing of the user program. The diagnostic interrupt
● The S7-1500 CPU remains in RUN, even if no diagnostic interrupt OB is present in the
Detailed information on the error event is available with the instruction "RALRM" (read
additional interrupt information).
Default setting
These diagnostic interrupts are not enabled in the default setting.
36
Once you have remedied the error, the DIAG LED goes out.
OB (e.g. OB 82) is called. The event that triggered the interrupt is entered in the start
information of the diagnostic interrupt OB.
CPU. The technology module continues working unchanged if this is possible despite the
error.
Technology Module TM Count 1x24V (6ES7138‑6AA00‑0BA0)
Manual, 10/2013, A5E33002339-AA