Xylem ODO RTU, Руководство пользователя, Страница: 23 / 44

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Conductivity
Factory Reset
ODO values can be reset to the factory calibration by issuing a write single register command (function code 0x06) at address
0x0200 with a value of 0x0001.
Last Calibration Time and QC Score
The time of the last conductivity calibration and QC score can be queried to help track internal processes for keeping the devices
properly calibrated. The last time must be maintained during calibrations by the user. These registers do not support writes, as time
is written in each calibration command. This is only intended to be read. Last calibration time is a 32-bit (two register) value, and
is recommended to be set as epoch time. The last calibration time and QC score are available as read-only using a read holding
registers command (function code 0x03) starting at address 0x0310.
Request
Function Code 1 byte 0x06
Register Address 2 bytes 0x0300
Register Value 2 bytes 0x0001
QC Score
Best 0x00
OK 0x01
Bad 0x02
Address Description R/W Type Default
0x0310
Conductivity Last Calibration Time (s) [3:0] R U32 N/A
0x0311
0x0312
Conductivity QC Score R U16 N/A
Request
Function Code 1 byte 0x03
Register Address 2 bytes 0x0310
Number Registers 2 bytes 0x0003
Response
Function Code 1 byte 0x03
Byte Count 1 byte 0x06
Register Values 6 bytes Conductivity Last Calibration Time (s) [3:0]
Conductivity QC Score
Modbus Configuration & Commands