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MODBUS Communication
– Hold Register DO
15
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Address Item name Data type Access Value / description
5517 Calibration Mode Uint32 R/W
Measurement mode during calibration:
0:
Humid
1: Dry
D: 0 (for wide range sensors)
D: 1 (for trace range sensors)
5521 Cal0 Float R/W
Calibration value of Phase shift at the
low oxygen calibration point
L: 30.01 H: 79.99
5523 T0 Float R/W
Calibration value of Temperature at the
low oxygen calibration point
L: 10.01 H: 29.99
5525 Reserved Uint32 R
5527 O
2
-2
nd
Float R/W
Calibration value of Oxygen
concentration (unit defined in HR5535)
at the high oxygen calibration point
L: 0.001 H: 299.999
5529 Cal-2
nd
Float R/W
Calibration value of Phase shift at the
high oxygen calibration point
L: 10.01 H: 49.99
5531 T2
nd
Float R/W
Calibration value of Temperature at the
high oxygen calibration point
L: 10.01 H: 29.99
5533 pATM Float R/W
Calibration value of Pressure (in hPa) at
the high oxygen calibration point
L: 901 H: 1099
5535 O
2
-2
nd
Unit Uint32 R/W
0x 0800 0000 % DO saturation
Remark:
1) The unit for the O
2
-2
nd
value, for set
values see HR2089
D: % DO saturation
5703 Measurement Mode Uint32 R/W
Measurement mode:
0:
Humid
1: Dry
D: 0
6437 Calibration counter Uint32 R/W
Counts the number of Low/High Point
Calibrations
D: 0
6457 Serial Number YPA ASCII R
Alphanumeric Serial Number code:
16 bytes, 8 addresses