# Persistent Camera Enumeration

Persistent camera enumeration (PCE) allows VisionPro to maintain the correct association between ToolBlocks and available cameras when your application starts. With PCE enabled, VisionPro generates a virtual camera for any physical camera that is missing when the application is launched.

To enable PCE, you must manually edit the PCE initialization file VPCameraOrder.ini, located in %PUBLIC%/Cognex/Common.

See the following topics for more information: