Please note
: If your own applications are programmed, both error and status byte must be evaluated for a
proper system assessment.
In case of flow distortions, e.g. bubbles, the mean flow values may be affected.
Ensure that the serial interface parameters are set correctly and that no invalid letters are
sent as this can possibly lead to a hang-up of the system, which then requires a restart of
the system by powering off.
Below are some examples of output strings to help better understand the interface. All strings are terminated
with <CR> (=carriage return) <LF> (=linefeed) and are shown below between quotation marks ("). These output
strings are transmitted periodically every 10 Hz.
•
Sensor working correctly, calibration factor 0.99, table 1
"00
00
100
0.99
7195
7193
6897
+41"
<CR><LF>
•
Sensor working correctly, calibration factor 1.00 table 2, with negative flow values
"00
04
100
1.00
-3588
-3590
-3589
+43"
<CR><LF>
•
Sensor working correctly, calibration factor 1.34 table 2, with negative flow values
"00
04
100
1.34
-4804
-4805
-4805
+43"
<CR><LF>
•
Sensor connected, after stable zeroing
"00
40
100
1.00
0
0
0
+43"
<CR><LF>
•
Sensor connected, insufficient acoustic coupling/RSS value
"00
24
34
0.99
-------
-------
-------
+43"
<CR><LF>
•
Sensor connected, over temperature error 77°C on PCB inside device (data blanked out)
"1A
41
---
----
-------
-------
-------
+77"
<CR><LF>
•
Flow out of range condition: Flow e999999 ml/min; Cal_factor 1.01;
"00
40
75
1.01
^^^^^^
^^^^^^
^^^^^^
+29"
<CR><LF>
•
Flow out of range condition: Flow exceeds -999.999 ml/min; Cal_factor 1.50;
"00
40
89
1.50
vvvvvvv
vvvvvvv
vvvvvvv
+29"
<CR><LF>
•
Sensor disconnected
"00
E0
---
----
-------
-------
-------
+35"
<CR><LF>
Response to Serial Commands
•
Changing the calibration table (in sensors with more than one table) from table 1 to table 2 by command
"T2"<CR>. The status bit changes from 44 to 40. Due to clearance of averaging storage, the first 3 strings are
blanked
"00
44
100
1.00
0
0
0
+41"
<CR><LF>
"00
44
100
1.00
0
0
0
+41"
<CR><LF>
"00
60
0
1.00
-------
-------
-------
+41"
<CR><LF>
"00
60
0
1.00
-------
-------
-------
+41"
<CR><LF>
"00
60
0
1.00
-------
-------
-------
+41"
<CR><LF>
"00
40
100
1.00
2
0
0
+41"
<CR><LF>
"00
40
100
1.00
2
43
67
+41"
<CR><LF>
"00
40
100
1.00
3
36
67
+41"
<CR><LF>
BioProTT™ FlowTrack SL
Copyright em-tec GmbH
Page 33
D101-704 BioProTT
TM
FlowTrack SL – User Manual – V 1.0
