Operation
33
Message terminator
Message terminators for read and write
• Read: The pH meter terminates the string by ”CR”
(carriage return <0D> H).
• Write: The pH meter expects ”CR” or ”LF” (line
feed <0A> H) or any combination of these as mes-
sage terminator.
Numerical parameters
Format of a numerical parameter
• Mantissa:
preceded by +, –, blank or without sign
up to 14 valid digits incl. sign
Decimal point or comma floating or without
• Exponent:
”E” indicates exponent beginning
+ or – sign
1 to 3 digits
Exponent may be omitted.
Example: +1234567E–123
Exponent:
Numerical digits
Sign
Exponent
beginning
Mantissa:
Numerical digits
Sign
Reading measured values
or results
Com-
mand
Response
Unit
Description
RV0
± xx.xx
[pH]
pH value
RV1
± xxxxE–3
[V]
Electrode
potential
RV2
± xxx.x
[°C]
Pt100/Pt1000
temperature
RVTRT
xxxx
[hhmm]
Time: hours/
minutes
RVDRT
xxxxxx
[ddmmyy]
Date: day/month/
year
RVTCA
xxxx
[h]
Calibration timer
count
RVZA
± xx.xx
[pH]
Current
electrode zero point
RVSA
± xxxxE–3
[V/pH]
Current
electrode slope
Содержание 765
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