I have SIPROTEC 7SJ62 protection relay and i want to Communicate between s7-1200 and SIPROTEC 7SJ62 protection relay via Ethernet How can i do it ?

check the data sheet and the gsd file hope that will help you good luck 

FIRST CHECK FOR PROFINET COMMUNICATION. TO DO THAT YOU HAVE TO DOWNLOAD THE GSD FILE AND INSTALL IT IN TIA PORTAL.

IF YOU HAVE ANY PROBLEM WITH THAT U CAN USE MODBUS RTU. BUT IT REQUIRES AN ADDITIONAL CARD CM1241.

FOR FURTHER DETAILS PLEASE CHECK http://w3.siemens.com/smartgrid/global/en/products-systems-solutions/protection/overcurrent-feeder-protection/pages/7sj62.aspx

DOWNLOADS->FIRMWARE->PROFINET IO