DLR-TL001 Functional Description
Quick Reference Guide
5
ture samples and, eventually, it stores those samples
inside the log memory.
Sleep
. The tag enters the Sleep state at the end of a log-
ging activity. Differently from the Idle state, in Sleep state
the tag's log memory is not empty and it is retained until a
reset command is issued.
Manual Interface Behaviour
The DLR-TL001 tag has a simple manual interface that
includes a button and a bicolor red/green LED that,
depending on the configuration, allows to check the status
of the alarms and to start/stop the logging activity. By
default, the button can be used only to check the status of
the tag but not to start/stop the logging activity. Start/
stop function can be activated by setting the Button
Enable (BE) bit in the CONTROL register.
Figure 1. Manual Interface
The manual interface behaves as follows:
Pressing the button quickly (less than 2 second) activates
the check status function:
•
If the battery level is still sufficient for the logging
activity and no alarms are active, the green LED will
stay lit for 2 seconds.
•
If the battery level is still enough for the logging
activity but there are active alarms, the red LED will
stay lit for 2 seconds. The alarms causing the red LED
to light are the following:
•
Memory full (see MEMFULL bit in the STATUS
register description; refer to the Product Refer-
ence Guide for more details).