File : CS-SUP-MUTI-WTHERMAPP-E01.sxw
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Reading the number of logged values
WaveTherm modules supporting the Advanced Datalogging has the possibility to store up to M temperature
values.
If one sensor is wired, up to M values are affected to this sensor,
if two sensors are wired, up to M/2 values are affected to each sensor.
WaveTherm – DALLAS :
M = 4500
WaveTherm – PT100 :
M = 2000
WaveTherm – PT1000 :
M = 2000
An internal parameter (0x0B) allow to know precisely the number of logged values, since the beginning of the
datalogging cycle.
Attention, This parameter is coded in LSB first.
7.5.4 Reading the totality, or a part of the storage table
As the date of each recording is not stored, the equipment wishing to recover recordings in a given section of
time must calculate the dates of the desired recordings, according to the number of recording and date of the
last recording.
Applicative Command Description
0x06
Request to read the storage table of the advanced datalogging
0x86
Response to the request to read the storage table of the advanced datalogging
Contents of the request REQ_SEND_FRAME
Data Field (max : 152 bytes)
Applicative
Command
Number of recordings to be read
(MSB First)
Number of the most recent recording
(MSB First)
1 byte
2 bytes
2 bytes
0x06
Note : When the field 'number of the most recent event to be read' is set to 0x0000, the module
sends the latest events to facilitate the reading.
WaveTherm modules – application handbook
page 51 of 65
