45
PC CONNECTION
• Primary reading (corresponding to the selected range) - 11 ASCII chars, including
sign and decimal point and exponent.
• Secondary reading (only when primary reading is not mV) - 7 ASCII chars, including
sign and decimal point.
• Temperature reading - 7 ASCII chars, with sign and two decimal points, always in °C.
MDR
Requests the instrument 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
• 0x02 - Rel mV calibration available
• 0x04 - ISE calibration available
• pH calibration data (if available), which contains:
• the number of calibrated buffers (1 char)
• the ion charge, with sign (2 chars)
• 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, 1 - custom
• status (1 char): N (new) - calibrated in last calibration; O (old) - from an
old calibration.
• warnings during calibration (2 chars): 00 - no warning, 04 - Clean
Electrode warning.
• buffer value, with sign and decimal point and exponent (11 chars).
• calibration time,
yymmddhhmmss
(12 chars).
• electrode condition, with sign (3 chars). The “-01” code means not calculated.
• Rel mV calibration data (if available), which contains:
• the calibration offset, with sign (7 chars)
• the calibration time,
yymmddhhmmss
(12 chars).
• ISE calibration data (if available), which contains:
• the number of calibrated standards (1 char)
• the ion charge, with sign (2 chars)
• the calibration slope, with sign and decimal point (7 chars)
• the calibration time,
yymmddhhmmss
(12 chars)
• standards information (for each standard)
• type (1 char): 0 - always standard solution.