LEDs and his Importance
LEDs:
Rx (green)
Tx (yellow)
The LEDs Rx/Tx blink when the module is communicating with the PCD.
● They can be permantly activated if media mapping is used or
● Shortly blink with direct access.
Module detection
If the module is not plugged, there is a history entry.
If you need to detect if the module is plugged or not in your program code, you can
use the following function:
If the module has been correctly plugged, the status value is a positive num-
ber and all device information can be read. If the module has not been correctly
plugged or simply not plugged, the returned value is negative.
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