# Managing a Vision Controller

This topic covers how to manage the vision controller from within Designer, and also provides additional information about users and naming conventions. The name of the vision controller will be CGNXVC-XXYYZZ, where XXYYZZ is the last six characters of the MAC address of the Vision Controller's I-ENET port.

Note:

- If an attempt is made to log on to the vision controller with the wrong password more than six times, the log on access will be temporarily disabled. In this event, press the ESC key, choose the desired account from the possible selections (if no additional users have been added, the two default users, "user" and "admin" will be available), and then enter the correct password for the selected account.

- If the vision controller fails to power up, please contact your Cognex sales representative immediately.