
26
●Alarm inquiry command and response
Request command
Request mode
0: Instrument alarm
1: pH
2: mV
3: Ion
4: Conductivity, salinity, resistivity
Channel
Name (Alarm inquiry)
Header
Requests the alarm code in the instrument.
Response from pH meter
Error code
Request mode
Channel
Header
0x00000400
0x00000200
zzzzzzzz
0x00000008
0x00000020
0x00000002
0x00000004
0x00000001
R, AL,
x
,
y [CR][LF]
RAL,
x
,
y
, zzzzzzzz
[CR][LF]
Error code
Asymmetry potential error (pH)
0x00000100
0x00000010
0x00000080
0x00000040
Sensitivity error (pH, ion)
Maximum calibration points exceeded (pH, ion)
Memory full (instrument)
Cell constant is out of range (conductivity)
Description
Internal memory error (instrument)
Lower battery error (instrument)
Electrode stability error (other than the instrument)
Cannot identify standard solution (pH, conductivity)
Calibration interval error (pH)
Printer error (instrument)