Hanna Instruments HI2400 Instruction Manual page 26

MDR Requests the instrument's model name and firmware code
(16 ASCII chars).
GLP Requests the calibration data record.
The answer string contains:
• GLP status (1 char): represents a 4 bit hexadecimal
• DO calibration data (if available), which contains:
PAR Requests the setup parameters setting.
The answer string contains:
• Instrument ID (4 chars)
• SETUP information (2 chars): 8 bit hexadecimal
• Log type ‑ 01 to 12 ‑ the coresponding interval for
• Salinity value (4 chars)
• Altitude value (4 chars)
LLsxff: requests information about all lots and it sends the information
in frames of 10 lots each (a frame contains information about 10 lots)
Command Parameters:
x = D ‑ request DO data
ff ‑ requested frame number ‑ first frame is labeled 01
encoding.
• 0x04 ‑ DO calibration available
• the number of calibrated satandards (1 char)
• the calibration time, yymmddhhmmss (12 chars)
• standards information
• standard value, with sign and decimal point
(7 chars).
• the standard temperature, with sign and decimal
point (7 chars)
• the salinity value (4 chars)
• the altitude value (4 chars)
encoding.
• 0x01 ‑ beep ON (else OFF)
• 0x04 ‑ degrees Celsius (else degrees Fahrenheit)
lot log (5 s to 180 min)
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