Siemens SIMATIC ET 200SP Manual page 66

Alarms, faults and system events
8.3 LED statuses
"PF" LED
This LED indicates peripheral faults.
Table 8- 5 Meaning of the "PF" LED
PF Meaning
No peripheral fault is being signaled.
Red OFF
At least one AS-i slave is signaling a peripheral fault. Refer to the operating instructions for the
respective slave for the meaning of the peripheral fault, e.g., overload at the standard outputs and/or
overload of the sensor power supply of the standard inputs.
Red ON
Firmware update (Page 21)
"CER" LED
This LED indicates configuration errors. It lights when the slave configuration detected on the
AS-i cable does not match the CONFIGURED configuration in the AS-i master.
Table 8- 6 Meaning of the "CER" LED
CER Meaning
No AS-i configuration error.
Yellow OFF
Failure of an AS-i slave:
•
Yellow ON
•
•
•
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A configured AS-i slave is not present on the AS-i cable.
An excess slave not configured beforehand is present on the AS-i cable.
A connected slave has different configuration data (IO, ID, ID1, ID2) than the slave configured in
the AS-i master.
A slave with address "0" is in "Configuration mode" on the AS-i bus.
AS-Interface master CM AS-i Master ST (3RK7137-6SA00-0BC1)
Manual, 07/2017, A5E02655262020A/RS-AD/004