Hanna Instruments HI 110 - Manual (Page 26)

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CHR n Change the instrument range according with the parameter
value (n):
• n=0 pH range/0.001 resolution
• n=1 pH range/0.01 resolution
• n=3 mV range
• n=4 Relative mV range
COMMANDS REQUIRING AN ANSWER
pH?
Causes the instrument to send the pH reading. If the range is set
to mV, “Err6” is received.
MV? Causes the instrument to send the mV reading. If the range is set
to pH, “Err6” is received.
MR? Causes the instrument to send the relative mV reading. If the
range is set to pH or mV, “Err6” is received.
TM? Causes the instrument to send the temperature reading.
RAS Causes the instrument to send a complete set of readings in
according with the current range:
• pH, mV and temperature reading on pH range.
• mV and temperature reading on mV range.
• Rel mV, absolute mV and temperature reading on Rel
mV range.
MDR Requests the instrument model name and firmware code.
PAR Requests the setup parameters setting (instrument ID, calibra-
tion alarm time-out, pH range, beep status).
GLP Requests the calibration data record.
Note: • “Err8” is sent if instrument is not in measurement mode.
• “Err7” is sent if mV are asked during pH calibration mode.
• “NAK” (21) character is sent when the instrument receives an
unknown or a corrupted command.
Note: Invalid commands will be ignored.