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Communication Case
：
The Computer Sends
: 00 03 00 00 00 01 85 DB
pH / ORP Table Returns : 00 03 02 02 AE 05 58
Return Command Comment:
00 is 485 address;
03 is the function code;
02 is the data length of the return pH value: 2 bytes;
02 for the return of the pH value of 686 (hex high byte);
AE for the return of the pH value of 686 (hex low byte);
05 58 is the CRC check value;
Example of Temperature Reading:
Computer Sends
: 00 03 00 02 00 01 24 1B
Conductivity Meter Returns
: 00 03 02 00 FA 05 C7
Return Command Annotation:
00 is the address of slave, which can be configured in the instrument;
03 is function code, reading and holding register;
02 is the length of data of returned temperature value, 2 bytes;
00 FA is the returned temperature value, 25.0°C, unit: °C.
The value obtained shall be divided by 10 to get the current temperature value. The
range: -10.0-130.0°C.
05 C7 is the CRC16 check code, which is varying depending on different data.
