Controller View Controller View When the Controller node is selected in the system tree view, the configuration page for the controller dis- plays. This page provides information about the system and the available digital inputs and outputs. Controller Node Configuration Information System Information ACE User's Guide, 3.6.x, 18316-000 Rev A Page 273 Item Description OS Version Version and revision number of the MicroV+ software in use. Serial number Serial number of the system controller. System memory Size of the system program memory in kilobytes (1K = 1024 8-bit bytes)