216 ï Fieldbus CommunicationETHERNETWAGO-I/O-SYSTEM 750Linux Fieldbus CouplerNoteUp to 1 million write cycles are possible for writing to the flash memory forthe file system.The following table shows the supported FTP commands for accesses to thefile system:Command FunctionUSER Identification of the userPASS User passwordACCT Account for access to certain filesREIN Server resetQUIT Terminates the connectionPORT Addressing of the data linkPASV Changes server in the listen modeTYPE Determines the kind of the representation for the transferred fileSTRU Determines the structure for the transferred fileMODE Determines the kind of file transmissionRETR Reads file from serverSTOR Saves file on serverAPPE Saves file on server (Append mode)ALLO Reservation of the necessary storage location for the fileRNFR Renames file from (with RNTO)RNTO Renames file in (with RNFR)ABOR Stops current functionDELE Deletes fileCWD Changes directoryLIST Gives the directory listNLST Gives the directory listRMD Deletes directoryPWD Gives the actually pathMKD Puts on a dirctoryThe TFTP (Trival File Transfer Protocol) is not supported by some of thecouplers/controllers.More informationYou can find a list of the exact available implemented protocols in the chapter"Technical Data" to the fieldbus coupler and/or controller.
