ArduCopter SITL connection with ROS

SITL Simulator (Software in the Loop)
Good afternoon everybody!
I’m trying to connect Ardupilot SITL (running on PC with Ubuntu 20.04) with ROS Noetic (running on Raspberry). Raspberry works as AP, it’s own IP is 192.168.12.1 and PC’s IP is 192.168.12.101. I’m trying >roslaunch apm.launch with launch file arg name=“fcu_url” default=“udp://@192.168.12.101:14580” and >output add 192.168.12.1:14580 in simulator terminal, but no connection establishes.
If I’m trying same way launch jmavsim everything works fine. What am I doing wrong?