Which version of Eclipse you are working on.
Check the eclipse version ( go to help --> about eclipse )
According to the eclipse version try the following plugin links as below
Try the following link
https://tools.hana.ondemand.com/kepler for Eclipse Kepler (4.3)
https://tools.hana.ondemand.com/juno for Eclipse Juno (4.2)
.
SAP Development Tools for Eclipse
1) Go to Help --> Install Software
2) Specify the plugin location with a custom Name
3) Select the required Softwares available from it
