Reading the parameter 3, Temperature median, in float data type, from the SMET
Device Address= 01 = 0x01 (byte).
Address 40057-40001=56 = 0x0038 (word) (Address in Hex of the first register)
Functional code= 04=0x0004 (word)-Read input registers
Number of registers = 02=0x0002 (word)
CRC = CRC16 (Word) (Little Endian)
Command Structure:
Device Address 01 | Functional Code 04 | Address of the first register (Hi byte) 00 | Address of the first register (Lo Byte) 38 | Number of registers (Hi byte) 00 | Number of registers (Lo byte) 02 | CRC (Lo Byte) F0 | CRC (Hi Byte) 06 |
Command Response
Device Address 01 | Functional Code 04 | Number of Bytes 04 | Value of the first register (Hi Byte) 41 | Value of the first register (Lo Byte) B1 | Value of the second register (Hi Byte) 5C | Value of the second register (Lo Byte) 29 | CRC (Lo Byte) 47 | CRC (Hi Byte) 41 |
Data = 0x41B15C29 = 22.17 (Float)
Temperature median = 22.17 °C (default unit)
Reading the Parameter 1, Viscosity median, status
Device Address= 01 = 0x01 (byte).
Address 40044-40001=43 = 0x002B (word) (Address in Hex of the first register)
Functional code= 04=0x0004 (word)-Read input registers
Number of registers = 01=0x0001 (word)
CRC = CRC16 (Word) (Little Endian)
Command Structure:
Device Address 01 | Functional Code 04 | Address of the first register (Hi byte) 00 | Address of the first register (Lo Byte) 2B | Number of registers (Hi byte) 00 | Number of registers (Lo byte) 01 | CRC (Lo Byte) 41 | CRC (Hi Byte) C2 |
Command Response
Device Address 01 | Functional Code 04 | Number of Bytes 02 | Value of the first register (Hi Byte) 00 | Value of the first register (Lo Byte) 01 | CRC (Lo Byte) 78 | CRC (Hi Byte) F0 |
Data = 0x0001 = 1 (Uint16) Referring to the parameter status, this value means a general error occurred.
Reading the Parameter 8, Temperature raw, Int16 value
Device Address= 01 = 0x01 (byte).
Address 40099-40001=98 = 0x0062 (word) (Address in Hex of the first register)
Functional code= 04=0x0004 (word)-Read input registers
Number of registers = 01=0x0001 (word)
CRC = CRC16 (Word) (Little Endian)
Command Structure:
Device Address 01 | Functional Code 04 | Address of the first register (Hi byte) 00 | Address of the first register (Lo Byte) 62 | Number of registers (Hi byte) 00 | Number of registers (Lo byte) 01 | CRC (Lo Byte) 90 | CRC (Hi Byte) 14 |
Command Response
Device Address 01 | Functional Code 04 | Number of Bytes 02 | Value of the first register (Hi Byte) 08 | Value of the first register (Lo Byte) 9E | CRC (Lo Byte) 3F | CRC (Hi Byte) 58 |
Data = 0x089E = 2206 (Int16)
Since the register value is the temperature scaled by 100. The actual raw temperature value is 22.06 °C.
This register is useful for devices in which single point conversion requires too much computation.