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SERVOPRO CHROMA Gas Analyser
117
04400001A / Revision 7
11
RS-232 ADDENDUM
The communication parameters of the analyser are:
•
Baud rate:
38400
•
Parity bits:
none
•
Data bits:
8
•
Stop bits:
1
The following tables describe the command set:
11.1 Start analysis
Character No
Character
ASCII Code
No (hex)
Character No Character
ASCII Code
No (hex)
Meaning
1
>
3Eh
2
A
41h
command ID
1
>
3Eh
3
1
31h
Analysis started
2
A
41h
4 (checksum)
q
72h
3 (checksum)
A
41h
5
<
3Ch
4
<
3Ch
1
>
3Eh
2
A
41h
command ID
3
0
30h
Failure
4 (checksum)
r
71h
5
<
3Ch
K4000
Request / Command
Response
Table 25 : RS-232 Start Analysis
11.2 Analyser status
Character No
Character
ASCII Code
No (hex)
Character No Character
ASCII Code
No (hex)
Meaning
1
>
3Eh
2
B
42h
command ID
3
1
31h
1 = success
4
1 or 0
31h or 30h
Analyser ready: 1=ready; 0=not ready (still running)
5
1 or 0
31h or 30h
Run Modus: 1=measurement; 0=not measurement
1
>
3Eh
6
1 or 0
31h or 30h
Run Modus: 1=calibration; 0=not calibration
2
B
42h
7
1 or 0
31h or 30h
General Alarm: 1=OK; 0=Alarme active
3 (checksum)
B
42h
8
1 or 0
31h or 30h
Flow Alarm Sample: 1=OK; 0=Alarm active
4
<
3Ch
9
1 or 0
31h or 30h
Flow Alarm Carrier: 1=OK; 0=Alarm active
10
1 or 0
31h or 30h
Detector Alarm (Plasma off?): 1=OK; 0=Alarm active
11
1 or 0
31h or 30h
Calibration Alarm: 1=last cal. OK; 0=last cal. invalid
12
1 or 0
31h or 30h
Measurement Alarm 1=last measurement OK 0=invalid
13 (chksm)
X
14
<
3Ch
1
>
3Eh
2
B
42h
command ID
3
0
30h
0 = failure
4 (chksm)
r
72h
5
<
3Ch
K4000
Request / Command
Response
Table 26 : RS-232 Analyser Status