How To: Operate PLCs safely

To increase security when operating the PLC with the loaded application, you need to encrypt communication with the PLC with a certificate (device security settings).

You also need to use the device user management. This also includes the password policy and login lock, as well as the activation of an interactive login mode.

The use of various PLC operating modes and the audit log function are additional tools relevant to security.

At runtime, you can use a library to define when specific critical operations must not be executed.