SC with mechanisms and system external axis

The SC contains one mechanism.
Will the mechanism can be visible to the system to configure as a external axis?

As long as the MechanismType of the mechanism is correct, it should find it.

http://developercenter.robotstudio.com:80/Index.aspx?DevCenter=BlobProxy/devcenter/RobotStudio&OpenDocument&Url=html/b1c4a2a2-4a71-a2b7-2216-ce09748fefda.htm&OptTitle=MechanismType Enumeration

However since the SC itself isn’t a Mechanism you should have opened it in the station before starting the controller so that you can point it out as exisisting in the station.