Editing Frame check sequence (section)

{{short description|Error-detecting code used in communications protocols}}

{{Use American English|date = March 2019}}

[[File:Ethernet frame.svg|thumb|Structure of an Ethernet packet, including the FCS that terminates the [[Ethernet frame]]<ref>{{Citation
 | url = https://ecfsapi.fcc.gov/file/1050839507018/IEEE%20Standard%20for%20Ethernet.pdf
 | title = 802.3-2012 - IEEE Standard for Ethernet
 | date = 2012-12-28 | access-date = 2015-07-05
 | publisher = [[IEEE Standards Association]] | section = 3.1.1 Packet format
}}</ref>]]

A '''frame check sequence''' ('''FCS''') is an [[error-detecting code]] added to a [[Frame (networking)|frame]] in a [[communication protocol]].  Frames are used to send [[payload data]] from a source to a destination.