User's Manual

File : CS-SUP-MUTI-WTHERMAPP-E01.sxw
7.5 ADVANCED DATALOGGING
When the WaveTherm support the Advanced Datalogging, the datalogging allows a periodic collection of
temperature measurements up to M temperatures. If two temperature sensors are used, then the
WaveTherm return the last M/2 values of each sensor.
 WaveTherm – DALLAS : M = 4500 temperatures;
 WaveTherm – PT100 : M = 2000 temperatures;
 WaveTherm – PT1000 : M = 2000 temperatures.
This functionality is principally used with the index logging in time steps, but it can be also used with index
logging once a weel, or once a month.
In the current firmware version, the Advanced Datalogging only supports the 'stop memory full'
mode. Thus the 'permanent loop' mode cannot be activated.
This chapter describes the following procedure :
 Parameter setting of the Advanced Datalogging mode,
 Reading of the logged temperature values,
 re-initalizing the storage table, and re-starting a new datalogging cycle.
7.5.1 Description of the parameters used
According to the datalogging type ( time steps, once a week, once a month), some specific parameters must
be used.
Parameter
number
Description
Size
(in bytes)
Access
Right
Default value
0x01 Operating mode 1 R/W
Depending of
the module used
(see 6.1.5)
0x0A number of loop of the datalogging storage table 1 R 0x00
0x0B Number of temperature values stored in the table (LSB first) 2 R 0x0000
0x0C Precision level of the measurement 1 R/W 0x00
0x80 Measurement Period (datalogging in time steps) 1 R/W 0x13
0x81 Start hour of the datalogging in time steps 1 R/W 0x08
0x82 Day of the week, or of the month (datalogging) 1 R/W 0x01
0x83 Time of measurement (datalogging once a week, or once a month) 1 R/W 0x08
These specific parameters must be initialized before activating the datalogging mode.
WaveTherm modules – application handbook page 48 of 65