ROS of sick_tim series lidar's drivers package

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Thanks for your reply sincerely. But I still have some question about this topic. Follow this link: http://wiki.ros.org/sick_tim There are 6 parts in it, my question are: The first(Choosing the right branch) and second(Supported scanner types) parts are not problem for me

Because I already installed the Jade ROS and my lidar is in the supported scanner types. But in the the "Pack Summary", there is a "Source" with the link"git https://github.com/uos/sick_tim.git (branch: jade)", should I download it and put it somewhere in my computer?

Choosing the branch is for source installation. Since you will install using debian package, skip this topic. We select the ROS distro with "-jade-" part in the package name I wrote. For the second topic, since you have TiM561, you will run sick_tim551_2050001 node.

And in the third part(ROS API), there are 2 parts in it which are "Published Topics" and "Parameters". I click the links and see so much codes in it. Should I execute the codes in the Ubuntu's terminal?

Sorry for asking so much question, it would be very grateful for your reply.

Did you go over tutorials? Topics are used for gathering scan data etc. Parameters are for configuration of your LIDAR and node. You will not execute codes for this. You will run the node with necessary parameters and get your scan data from /scan topic.

I read the tutorial these days. I use the command "git clone" to install the source from the package summary and I can see the some program is running, but it shows that USB can't be connected. (I use USB to connect to my com) I also change the port in the parameter, but I'm not sure is it right way

You can supply these (command you run, error messages you get etc.) in detail by editing your question.

Dot. Akif, could I have your contact way because it will be clear if we use pictures to show the problem. Thank you very much for your kindly help.