Siemens SIMATIC S7-1500R/H Manuale - Pagina 32

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Meaning of the RUN/STOP, ERROR and MAINT LEDs

CPU 1517H-3 PN has the following LEDs for displaying the current operating state and

diagnostics status.

Note

LED patterns of the S7-1500H redundant system

Note that it is not always possible to:

• Determine the state of the CPU from the signal pattern of individual LEDs

• Determine the state of the other CPU from the signal pattern of a CPU

The "Meaning" column only shows a possible typical cause.

To investigate the cause of the signal pattern, use the diagnostic buffer and its display via:

• STEP 7

• HMI devices

• Displays of the CPUs

CPU 1517H-3 PN (6ES7517-3HP00-0AB0)

Equipment Manual, 11/2019, A5E42011886-AB

Interrupts, diagnostics, error messages and system events

4.1 Status and error display of the CPU