Folders and PLCnext environment variables

The following directories with the associated environment variables are required in the system for app administration:

Environment variable Value Use
ARP_HOME_DIR /opt/plcnext Working directory of the PLCnext Runtime
ARP_ACTIVE_APPS_DIR $ARP_HOME_DIR$/apps Contains the folders of the mounted app containers.
ARP_APPS_HOME_DIR $ARP_HOME_DIR$/appshome All app data such as persistent memory and symlinks to determine binaries are
stored here.
ARP_APPS_DATA_DIR $ARP_APPS_HOME_DIR$/data Represents the root storage folder for persistent app data.
ARP_APPS_TEMP_DIR /var/tmp/appsdata Represents the root storage folder for temporary data of the apps.

Storage directory for the symlinks to the command line tools of the apps.
This is entered in the PATH
environment variable for all users.











 • Published/reviewed: 2020-06-11 • Revision 03 •