hx711 to pwm signal

hello, maybe some one can help me to make program that arduino give pwm output signal depending on load cell signal from HX711 amp ? in general i want that when its 0.0kg have 50% pwm and if kg goes >0 then pwm goes to 100 % and if kg goes <0 then pwm goes to 0 %. later i will build circuit to convert pwm to 0-5 v signal.

How can you have something weight less than 0 kg ?

Look at examples for the HX711 provided with the library for calculating weight .
All you have to do is scale that to an analog output ( look at the fade example).
Have a go and post your code up

i need to measure push and pull value, so that why i will have plus and minus values in weight