How to read Value Sensor from Modbus RTU

i have trouble when i read value from sensor that modbus RTU, the value that appears does not match the original, as shown in the picture.
do you have a solution or suggestion?
or whether it must be converted first.
thank you

well - go on - give us a clue... what should it be ? You are sending it a string. Which I guess you want to be a number - but we have no idea what sort of number.