# Overview

The Security feature secures objects and screens from unauthorized users.

Log in with a valid user name and password to access secured objects and screens.

You can access a secured object or screen, only if you have a security level equal to or greater than the security level set to that object or screen.

Note:

- You can set the auto logout time and password expiration period.
- When you cannot log in, you can use the system errors to check the reason (such as password has expired).
- You can get the login history by using the Operation Log. You can see who logged in, when, and what was done.

WARNING
unintended equipment operation Security level must not be assigned to any object without configuring user with the valid access security level. Failure to follow these instructions can result in death, serious injury, or equipment damage.