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RFC 4072R
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PHOENIX CONTACT 110146_en_00
4.5 Directory structure of the file system
The controller works with a Linux operating system. You can access the controller via SFTP
or via SSH and view the directories and files on the file system (on the SD card), and modify
them as necessary.
The programs and configurations (e.g., controller IP address) belonging to your
PLCnext Engineer project are saved on the SD card. In addition, application-specific data
can also be stored on the SD card.
If you make changes to Linux operating system files on the SD card, the Linux operating
system generates an overlay file system from the changed files and directories.
Please note:
Changes to the file system are not synchronized between the PRIMARY and BACK -
UP controllers.
Further information on the directory structure of the file system is available in the
PLCnext Info Center .
4.6 Using SFTP to access the file system
The file system on the SD card of the controller is accessed via the SFTP protocol. SFTP
client software is required for this (e.g., WinSCP).
Access to the file system via SFTP requires authentication with a user name and password.
Please note:
Authentication with a user name and password is always required for SFTP access
and cannot be deactivated.
Only users with administrator rights can access the file system.
You can create additional users with administrator rights in the web-based manage -
ment of the controller via the User Manager. Further information is available in the
PLCnext Info Center .
In the delivery state, the following access data is preset with administrator rights:
User name: admin
Password: Printed on the controller