BART LABDMM2, User Manual

Page: 53 / 57

LABDMM 2 USER GUIDE
MO.LABDMM2.560.ENG.R1
Pag. 25
X=’1’ : Start a Datalog cycle with temperature
Y : 1 character :
The Y parameter specify is you want to continue an existing data log cycle or you want to start
a new one.
: ‘1’ : continue datalog
: ‘0’ : start a new datalog cycle
answer Pressure value message
NOTE
STOP DATALOG COMMAND
command L100000<cr>
answer Pressure value message
NOTE STOP the current datalog cycle
MONITORING
A DATALOGGING CYCLE
It is possible to know the number of acquisitions points that has been made during the last cycle or during the running
datacycle
command L200000<cr>
answer L2YNNNNNN<cr>
where
Y is ‘R’ when a datalogger cycle is running otherwise Y =’ ‘ (space)
NNNNNN number of acquisitions done (6 ASCII chars)
NOTE STOP the current datalog cycle
DOWNLOAD DATALOGGER DATA
First of all the application program MUST read how the datalog cycle has been generated with the commands Read Log
Header and Read Log Index .
Using this command it is possible to know how many bytes each data packed is composed.
Read log Header gives informations on how many data point are stored while Send Log Index gives informations about
the data log sub cycles.
Each index in this command give the length in acquisitions points of the sub-cycle.
It is possible to download only the whole datalog. It is not possible to download sub-cycle separately.
Use the sub-cycle index to identify start-stop of each sub-cycle.
Read Log Header COMMAND
command L300000<cr>
answer L3P00000UUTBBNNNNN<cr>
P : 1 character ASCII : number of decimal point used for the pressure value
UU : 2 ASCII characters : index of the pressure unit during datalog
T : 1 character ASCII : ‘1’ = download data packet contain temperature data
‘0’ = download data packet do not contain temperature data
BB : 2 ASCII characters : number of byte in the data packet
NNNNN : 5 ASCII characters : time interval between two acquisitions of last datalog cycle
recorded
Read Log Index COMMAND
command L>00000<cr>
answer L>NAABBCCDDEE<cr>
Where :
N : 1 byte integer value (binary format) : datalog sub cycle active
AA :
2 byte integer value (binary format) : length in points of the 1° sub-cycle : 0 = no data
BB : 2 byte integer value (binary format): length in points of the 2° sub-cycle : 0 = no data