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• 0x04: out of calibration range
• 0x08: the meter is in autoend mode
• Reading status: R ‑ in range, O ‑ over range, U ‑ under range
• The following status flags are sent for all modes except mode 25
• DO reading range flag
• temperature reading range flag
• pressure reading range flag
• OUR/SOUR reading range flag (sent only if in OUR/SOUR measure mode)
• The following status flag is sent only for mode 25
• BOD reading range flag
• Readings
• The following values are sent for all modes except mode 25
• DO reading, including sign and decimal point (8 chars)
• temperature, including sign and decimal point (8 chars)
• pressure value, including sign and decimal point, always in mmHg (11 chars)
• OUR/SOUR reading, including sign and decimal point (sent only if in OUR/SOUR
measure mode) (8 chars)
• OUR/SOUR counter (sent only if in OUR/SOUR measure mode) (4 chars)
• The following values are sent only for mode 25
• BOD reading, including sign and decimal point (8 chars)
• initial DO value, including sign and decimal point [mg/L] (6 chars)
• final DO value, including sign and decimal point [mg/L] (6 chars)
MDR Requests the instrument model name and firmware code (16 ASCII chars).
GLP Requests the calibration data record.
The answer string contains:
• the number of calibrated buffers (1 char)
• calibrated buffer unit (0 = %, 1 = mg/L) (1 char)
• buffer value including sign and decimal point (6 chars)
• calibrated buffer unit (0 = %, 1 = mg/L) (this value is sent only if there is a two point
calibration) (1 char)
• buffer value including sign and decimal point (this value is sent only if there is a two point
calibration) (6 chars)
• salinity value (3 chars)
• pressure value in mmHg, including sign and decimal point (11 chars)
• temperature value including sign and decimal point (8 chars)
• calibration time: yymmddhhmmss (12 chars).
PC INTERFACE
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