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PC CONNECTION
• xx=02 pH range/0.1 resolution
• xx=03 mV range
• xx=04 Relative mV range
• xx=05 ISE range
The instrument will answer for these commands with:
<STX> <answer> <ETX>
where:
<STX> is 02 ASCII code character (start of text)
<ETX> is 03 ASCII code character (end of text)
<answer>:
<ACK> is 06 ASCII code character (recognized command)
<NAK> is 21 ASCII code character (unrecognized command)
<CAN> is 24 ASCII code character (corrupted command)
Commands Requiring an Answer
The instrument will answer for these commands with:
<STX> <answer> <checksum> <ETX>
where the checksum is the bytes sum of the answer string sent as 2 ASCII characters.
All the answer messages are with ASCII characters.
RAS
Causes the instrument to send a complete set of readings in according with the current range:
• pH, temperature and mV reading on pH range.
• Rel mV, absolute mV and temperature reading on Rel mV range.
• concentration, mV and temperature reading on ppm range.
The answer string contains:
• Meter mode (2 chars):
• 00 - pH range (0.001 resolution)
• 01 - pH range (0.01 resolution)
• 02 - pH range (0.1 resolution)
• 03 - mV range
• 04 - Rel mV range
• 05 - ISE range
• Meter status (2 chars of status byte): represents a 8 bit hexadecimal encoding.
• 0x10 - temperature probe is connected
• 0x01 - new GLP data available
• 0x02 - new SETUP parameter
• 0x04 - out of calibration range
• 0x08 - the meter is in autoend point mode
• Reading status (2 chars): R - in range, O - over range, U - under range. First
character corresponds to the primary reading. Second character corresponds to mV
reading.