Byte no Designation Size Value [hex]
04 Registry number Hi 1 byte
00
05 Registry number Lo 1 byte
02
06 CRC-Lo 1 byte
---
07 CRC-Hi 1 byte
---
Example. Temperature readout form two channels (address 40001 to 40002 / address 30001 to 30002)
01-03-00-00-00-02-CRCLo-CRCHi
01-04-00-00-00-02-CRCLo-CRCHi
Response
Byte no Designation Size Value [hex]
00 Module address 1-byte
01 [ 01 to F7]
01 Function code 1-byte
03 / 04
02 Number of data bytes N-byte
04 [depend on inquiry(4)]
03 Data1-Hi 1-byte
09
04 Data1-Lo 1-byte
60
05 Data2-Hi 1-byte
09
06 Data2-Lo 1-byte
92
07 CRC-Lo 1-byte
---
08 CRC-Hi 1-byte
---
Example. Temperature readout from (address 40001 to 40002 / address 30001 to 30002)
01-03-04-09-60-09-92-CRCLo-CRCHi
01-04-04-09-60-09-92-CRCLo-CRCHi
In respond channels temperature from 0 to 1 is presented as 4-byte with values:
- channel_0 = 0x0960 => 2400/100 => 24,00°C
- channel_1 = 0x0992 => 2450/100 => 24,50°C
Response - in case of error
Byte no Designation Size Value [hex]
00 Module address 1-byte
01 [ 01 do F7]
01 Function code 1-byte
83 / 84
02 Error code 1-byte
01 - unknown function
02 - unknown data address
03 - unknown data value
04 - unknown error during inquiry converting
03 CRC - Lo 1-byte
04 CRC - Hi 1-byte
7.3.1.2. FUNCTION 0x03 / 0x04 – READOUT OF RELATIVE HUMIDITY FROM MEASURING
CHANNEL [4X / 3X-REFERENCES]
Function 0x03 / 0x04 are used for readout of the value from measuring channel (sensor).
The value from measuring channel (sensor) is presented by a 16-bit register.
The registers with measuring value of relative humidity are in the format of 16-bit signed integer (C/C++ type short int).
The actual value of relative humidity in percent (0 – 100 [%RH]) is obtained from readout register according to algorithm from
paragraph 7.3.1.1 by use appropriate factor value DW=10 (table p.7.3.1.1).
7.3.1.3. FUNCTION 0x03 / 0x04 – READOUT OF ATMOSPHERIC PRESSURE FROM
MEASURING CHANNEL [4X / 3X-REFERENCES]
Function 0x03 / 0x04 are used for readout of the value from measuring channel (sensor).
The value from measuring channel (sensor) is presented by a 16-bit register.
The registers with measuring value of atmospheric pressure are in the format of 16-bit signed integer (C/C++ type short int).
The actual value of atmospheric pressure in hPa (150 – 1150 [hPa]) is obtained from readout register according to algorithm from
paragraph 7.3.1.1 by use appropriate factor value DW=10 (table p.7.3.1.1).
7.3.1.4. FUNCTION 0x03 / 0x04 – READOUT OF LIGHTING FROM MEASURING CHANNEL
[4X / 3X-REFERENCES]
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