E+E Elektronik EE240 User Manual page 34

12.2 Modbus TCP, Reading a Temperature of 18.97 °C (Float 32 bit)
from Register #2
The data is encapsulated according the Modbus standard described in AN0103, with the command line
listed below to be sent for reading the temperature from register #2 of slave ID 65 (hex 41).
41 04
Register 01, counted from 0, means register #2 (number set in the EE240 webserver)
Response if byte order is MSB first (there is no CRC):
41 04
Decoding the 4 bytes (41 97 C2 8F) according the IEEE754 format results in 18.969999 °C
34
00 01 00
00 41 97
02
C2 8F
User Manual EE240 Wireless Sensor Network