5
OPERATION
34
OPTISENS TUR 2000
www.krohne.com
07/2017 - 4001970202 - MA OPTISENS TUR 2000 R01 en
5.3.2 Acquisition
Command Format: ID + A
^
For example, if ID = 14, type 14A
^
or 00A
^
By sending the command 'A' (00A), the probe responds by sending a data record containing the
code, ID, date, time, and the value of all measurements.
The transmission of the measured parameter followes the format:
Measuring field - Sign of the measurement (if positive it sents one space) - Value of the
measurement (6 characters
–
aligned on the right)
Measurement unit field
–
Measurement unit of the parameter (4 ch.
–
aligned on the left) - 1
space (ASCII 32)
At the end of the record the probe sends the data of the last calibration, than 2 bytes with the
BCC.
The transmission is ended with a carriage return <cr> and line feed <lf> sequence.
BCC calculation
The BCC is calculated as XOR of all bytes of the message (excluded <cr> and <lf>) and divided in
2 nibble. The 2 nibble are then transformed in ASCII codes.
Figure 5-4: Record format
±
100.0 NTU
Turbidity value
±
100.0%
Ceck signal value
±
20.0
°
C
Temperature
±
10%
Check fouling
±
200%
Check dry cell
±
0err
Check error 0=no error, 1= fouling error, 2= dry
error
±
36.0%
Average signal generated by the external light
±
0err
Light error 0=no error, 1= external light error
XX/XX/XX
Last calibrate date
XX:
2 byte BCC
