Panasonic CZ-256ESMC3 Technical Data Manual

Also see for CZ-256ESMC3: Quick reference Operating instructions

ー 38 ーReplacement of SD card, and operation procedure at time of failureVarious procedures● Definition of termsTwo SD devices are built-in to the Intelligent Controller.Since SD cards of different types (SLC/MLC) are inserted into each device, we will explain based on the followingdefinition of terms.Term DescriptionMain SD card A high durability SLC SD cardIn normal operation, it is used as the storage location for main data.Sub SD card A standard durability MLC SD cardIn normal operation, it is used as the backup storage location.* If the main SD card fails, as an emergency measure you can temporarilyoperate the unit by switching the database mode so that the sub SD card isused as the main SD card (master database). (*1)SD device 1 It is used as the main SD card device.SD device 2 It is used as the sub SD card device.Master database This is the database mode to set the SD card inserted in SD device 1.When used as the main SD card, it is a mandatory settings mode.Replication database This is the database mode to set the SD card inserted in SD device 2.When used as the sub SD card, it is a mandatory settings mode.*1: In temporary operation, insert the sub SD card that was being used in SD device 2 into SD device 1, andswitch to master database mode to operate the unit. In this case, backups will not be made because there isno SD card inserted in SD device 2, and the unit is operated with one SD card (SD device 1 only). If the SDcard fails under temporary operation, the data cannot be restored. Temporary operation is for temporary use.Promptly replace the service parts of the main SD card of SD device 1.*2: The sub SD card is allowed to be used only for temporary operation. Insert the sub SD card in SD device 1and switch the mode to master database in accordance with the operation procedure.LAN portSD device 2: Sub SD cardReplication database (* 2)USB port (cannot be used)SD device 1: Main SD cardMaster database