I was replaced the attached OmronEthernetFINSCom file and comes to conclusion. If you drop driver to screen and change port in driver properties it didnt work, same as before, but when i opened OmronEthernetFINSCom.vb file and change
Private m_PortNumber As UShort = 9600
to Private m_PortNumber As UShort = 9601
it works. Dont know why, but it worked.