Siemens SIMATIC RF200 System Manual page 82

Diagnostics
Note
These errors are acknowledged (= RESET) by the command antenna off or by the
transponder leaving the field. The hexadecimal errors 11, 12, 14 and 15 are only indicated
by the LED "flashing" the "error_RFID" byte is not used.
So-called event messages are also passed on to the master (see section "Event error codes
(Page 94)"). You can display these error messages using S7-PCT (diagnostics) or read them
out using the "IOL_CALL" function block. You can only reset event messages using S7 PCT
or the "IOL_CALL" function (system command).
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SIMATIC RF200 IO-Link
System Manual, 03/2012, C79000-G8976-C276-01