Hanna Instruments HI 98360 - Manual (Page 24)

24
CHR xx Change the instrument range according with the parameter
value (xx):
• xx=06 EC range
• xx=07 TDS range
• xx=08 NaCl range
The instrument will answer for these commands with:
>
where: is 02 ASCII code character (start of text)
is 03 ASCII code character (end of text)
:
is 06 ASCII code character (recognized command)
is 21 ASCII code character (unrecognized command)
is 24 ASCII code character (corrupted command)
COMMANDS REQUIRING AN ANSWER
The instrument will answer for these commands with:
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:
• EC and temperature reading on EC range.
• TDS, EC and temperature reading on TDS range.
• NaCl, EC and temperature reading on NaCl range.
The answer string contains:
• Meter mode (2 chars):
• 06 - EC range
• 07 - TDS range
• 08 - NaCl range
• Meter status (2 chars of status byte): represents a 8
bit hexadecimal encoding.
• 0x40 - TDS unit (0-ppm, 0-g/L)
• 0x20 - EC unit (0-
µ
S, 1-mS)
• 0x10 - temperature probe is connected
• 0x01 - new GLP data available
• 0x02 - new SETUP parameter
• 0x08 - AUTOHOLD is stable