49
13. RS 232 C interface
13.3 Output format of measured values
Notes:
Data fields are separated by spaces.
Character set: IBM, code page 437
Meaning of the special characters:
!
= Measuring with blank value (concentration) or
reference absorbance (absorbance)
t/T = Measurement with turbidity correction/with high
turbidity
*
= Measured value outside the measuring range
Q = AQA measurement
Character Meaning
3
consecutive number (not required for
interface commands CMES, CEXT and
CBLA)
5
method designation
6
I. D. number
17
date and time
4
special characters
9
meas. value
10
unit
12
citation
4
AQA ID (AQA2/AQA1)
13.4 Data transmission
Baud rate
4800
Data bits:
8
Stop bits:
1
Parity:
none
Handshake:
Hardware
Max. cable length
15 m
13.5 Pin assignment
Photometer
Computer
Printer
9-pin socket
9-pin socket
25 pin plug
with RS 232 C interface
1
4
20
-
2
3
2
TXD
3
2
3
RXD
4
1 and 6
6
-
5
5
7
SG
6
4
20
-
7
8
5
-
8
7
4
DTR (if not available:
short-circuit CTS and RTS )
9
-
-
