I found the cause - http protocol wasn't enabled on WebLogic server. I changed protocol to t3 and port to 7001 - process works properly.
But i've met to other problem. I have cluster - 1 admin server and 2 managed nodes, all applications work on managed nodes, but i can't get any information about applications (for ex. application state) directly from managed node. Managed nodes don't contain domainruntime directory. When i try to get information about applications that work on managed nodes through admin server - i get information about 5 applications (total 51) only.