CJ2 CPU Unit Software User's Manual - CIP ETI

7 File OperationsBackup Restore OperationAll PLC data, including data in the CPU Unit, Special I/O Units, and CPU Bus Units, can be backed upand restored on a computer by using PLC Backup Tool. (Refer to the CJ2 CPU Unit Hardware User’sManual (Cat. No. W472) for details.)FWRIT(701)/FREAD(700) InstructionsI/O memory data can be saved on the Memory Card or in EM file memory in the text or CSV format byusing the FWRIT(701) instruction in the user program. It can then be transferred to a computer via aMemory Card Adapter and edited with a spreadsheet program.FWRITI/O memory data stored inTXT or CSV formatVia Memory CardAdapterSpreadsheetprogramMemory CardConversely, data such as Special I/O Unit settings can be created with a spreadsheet program in text orCSV format, stored on a Memory Card, and read to the CPU Unit by using the FREAD(700) instruction.Refer to the CS/CJ/NSJ-series Instructions Reference Manual (Cat. No. W474) for detailsReplacing the User Program during Operation Using an AuxiliaryArea Control BitThe entire user program can be replaced during operation from the program itself (without a ProgrammingDevice) using an Auxiliary Area control bit. (Refer to Section 10 CPU Unit Functions for details.)During operation.OBJReplace program.FINS CommandsFile memory can be manipulated by using a FINS command for file memory. A FINS command can besent from a computer connected using the Host Link protocol. Another PLC on a network can send aFINS command using CMND(490) or the local PLC can send a FINS command using CMND(490) inthe user program. (Refer to the Communications Command Reference Manual (Cat. No. W474) fordetails.)7-12 CJ2 CPU Unit Software User’s Manual