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The controller appears RSTA connected and RREL connected.

That is good, that means that everything is connected.

I tried to write in various topics, but nothing happens

That is expected, as the driver exposes a FollowJointTrajectory action interface. It does not listen to any topics The /joint_state topic is for reporting current state of the robot, not for controlling it.

The controller appears RSTA connected and RREL connected.

That is good, that means that everything is connected.

I tried to write in various topics, but nothing happens

That is expected, as the driver exposes a FollowJointTrajectory action interface. It does not listen to any topics topics.

The /joint_state topic (for instance) is for reporting current state of the robot, not for controlling it.