Configuring Online Help for the PI Tools 
You configure online help to be able to display SAP Library documentation for PI from the PI start page and from within the following PI tools:
Enterprise Services Builder
Integration Builder
Runtime Workbench
To maintain the exchange profile on your Integration Server, go to the following address:http://<host>:<port>/webdynpro/dispatcher/sap.com/com.sap.xi.exprofui/XIProfileApp.
More information: Exchange Profile Parameters.
In the default section, set the following parameters:
com.sap.aii.docu.url to http://help.sap.com/saphelp_nwpi711/helpdata/
com.sap.aii.docu.languages to <your language> (for example, EN)
Save your settings.