Diagnostic Alarms - Siemens SIMATIC S7-1500/ET 200MP Manual

Interrupts/diagnostic alarms

6.2 Diagnostic alarms

6.2 Diagnostic alarms
Enabling the diagnostic interrupts
You enable the diagnostic interrupts at the basic parameters.
The technology module can trigger the following diagnostic interrupts:
Table 6- 4 Possible diagnostic interrupts
Diagnostic interrupt
• Parameter assignment error
• Internal error
• Watchdog tripped. Module is defective.
• Debug interface activated
• Customer application not executable
• RS422/TTL error
• Error at digital outputs
• Supply voltage missing
Reactions to a diagnostic interrupt
The following happens when an event occurs that triggers a diagnostic interrupt:
• The ERROR LED flashes red.
Once you have remedied the error, the ERROR LED goes out.
• The S7-1500 CPU interrupts processing of the user program. The diagnostic interrupt OB
(e.g. OB 82) is called. The event that triggered the interrupt is entered in the start
information of the diagnostic interrupt OB.
• The S7-1500 CPU remains in RUN even if no diagnostic interrupt OB is present in the CPU.
The technology module continues working unchanged if this is possible despite the error.
You can obtain detailed information on the error event in the error organization block with
instruction "RALRM" (Read additional alarm information), in the information system of STEP 7
and in function manual Diagnostics
(https://support.industry.siemens.com/cs/ww/en/view/59192926), section "System
diagnostics in user program".
48
Monitoring
Monitoring is always active. A diagnostic interrupt is triggered each time
an error is detected.
A detected error only triggers a diagnostic interrupt if "Enable diagnostic
interrupt on wire break" has been enabled for the device configuration.
The diagnostic interrupts are not enabled in the default setting.
A detected error only triggers a diagnostic interrupt if "Error at digital
outputs" was enabled during the device configuration.
The diagnostic interrupts are not enabled in the default setting.
An error detected only triggers a diagnostics interrupt if "Missing supply
voltage L+" has been enabled for the device configuration.
The diagnostic interrupts are not enabled in the default setting.
Technology module TM FAST (6ES7554-1AA00-0AB0)
Equipment Manual, 04/2023, A5E52301130-AA