22
Status register
stores information about transducer’s status. Description of the particular bits
is given in the following table:
Bit
Name
Description
15
EEPROM error
The bit is set if the internally generated EEPROM
checksum does not match the stored value. Possible
malfunction of the transducer may be expected in this
case (see sections 4.4.3 and 4.4.4)
14
Sensor error
The bit is set if sensor or AD converter failure is detected.
Temperature readout cannot be considered as reliable in
this case (see section 4.4.6)
13
Out of range
The bit is set if the measured temperature is outside the
measurement range. The measurement accuracy is lower
compared to the specified.
12
Timing error
The bit is set when timing error during datalogging is
detected. Measurement period is shorter the time
required to complete one measurement (see section
4.5.5)
11
Data memory overflow
The bit is set when the data memory overflows. This can
happen when the datalogging is in progress and master
fails to read and erase the stored data quickly enough
(see sections 4.5.5 and 4.5.6)
4 - 10 Not used
3
Continuous mode
The bit is set when the transducer is in continuous
measurement mode (see section 4.4.7)
2
Start command received
The bit is set after receiving the Start measurement
command. Master can test this bit to determine whether
Start command transmitted as broadcast was accepted
by the transducer. The bit is reset after the first Read
multiple registers command (see section 4.4.6)
1
Datalogging in progress
The bit is set as long as the datalogging is in progress (see
section 4.5.5)
0
Measurement in progress The bit is set as long as the temperature measurement is
in progress. The master can poll this bit to determine end
of the measurement (see section 4.4.6)
4.3.7 Datalogger section
Datalogger registers store the values measured during datalogging and a few related
parameters. The detailed description of using the transducer as a datalogger is given in the
paragraph 4.5.5.
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