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OFF
Is equivalent to pressing OFF key
CHR xx
Change the instrument range according with the parameter value (xx):
• xx=00 pH range/0.001 resolution
• xx=01 pH range/0.01 resolution
• xx=02 pH range/0.1 resolution
• xx=03 mV 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.
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
• 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
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