Send command to ELM327 via USB and get the answer in a $VAR?

Hello,

I am looking for a solution, to send a command to my ELM327 device, connected via /dev/ttyUSB0

I figured out, that I can connect by the command:
screen /dev/ttyUSB0

There I can type a for example: 01 01
and I will receive an answer.

But I am looking for a solution, to send this 01 01 command via bash script and fetch the answer in a $VAR
so I can analyze this data in a bash script.

And idea?

Thanks Alex