e4c6b47f___Miscellaneous___Status_Guide__Effects_On_Character
[Status Effect] KO* [How To Cure Effect] Life spell, Life2 spell, Phoenix Down item, Phoenix Summon [Effects On Character] 
Character's HP is in the red, and character lies on the ground. Cannot act until revived.
The RPG Place - Final Fantasy VII - Miscellaneous - Status Guide
Effects On Character