@Waqas
While posted abroad, salary in FSP consists of the pay you are withdrawing in Pakistan( it is converted into dollars) plus foreign and entertainment allowances.
In addition, free accommodation, healthcare facilities and children education are provided. Amount varies from station to station. Check the link below for complete details. If the link is not working send me your email address i can email you all the relevant information.
See you at CSA!!
http://www.mofa.gov.pk/documents/cir..._Allowance.pdf