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Service and maintenance
10.1 Diagnostics
10.1.1
Diagnostics via the LED display
The following figure shows details of the LEDs of the RF166C.
①
②
③
④
Figure 10-1
124
Status LED display
RUN/STOP (RUN)
•
ERROR (ERROR)
•
MAINTENANCE (MAINT)
•
Reader LED display
PRESENCE (PRE)
•
ERROR (ER)
•
Ethernet LED display
LINK
•
PROFIBUS LED display
DP
•
LED displays of the RF166C communication module
Indicates whether the CM is ready for operation.
Indicates whether an error has occurred.
Shows whether the communication module needs mainte-
nance.
Indicates whether there are one or multiple transponders in
the antenna field.
Indicates whether communication with the reader is taking
place and whether a reader error has occurred.
Shows whether an Ethernet connection is present.
Shows whether a PROFIBUS connection via the PROFIBUS
interface is available.
Operating Instructions, 12/2019, C79000-G8976-C578-01
SIMATIC RF166C
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