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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
encoding.
• 0x01 ‑ pH calibration available
• pH calibration data (if available), which contains:
• the number of calibrated buffers (1 char)
• the offset, with sign and decimal point (7 chars)
• the average of slopes, with sign and decimal point
(7 chars)
• the calibration time,
yymmddhhmmss
(12 chars)
• buffers information (for each buffer)
• type (1 char): 0 ‑ standard (always 0)
• status (1 char): N (new) ‑ calibrated in last
calibration; O (old) ‑ from an old calibration.
• warnings during calibration (2 chars):
• 00 ‑ no warnings
• 01 ‑ clean electrode
• 04 ‑ clean electrode and check buffer
• 05 ‑ contaminated buffer.
• buffer value, with sign and decimal point
(7 chars).
• calibration time,
yymmddhhmmss
(12 chars).
• electrode condition, with sign (3 chars). The “‑01”
code means not calculated.
• electrode response with sign (3 chars). The “‑01”
code means not calculated.
PAR
Requests the setup parameters setting.
The answer string contains:
• Instrument ID (4 chars)
• Calibration alarm time‑out (2 chars)
• SETUP information (2 chars): 8 bit hexadecimal
encoding.
• 0x01 ‑ beep ON (else OFF)
• 0x04 ‑ degrees Celsius (else degrees Fahrenheit)
• 0x08 ‑ Offset calibration (else Point calibration)