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Simatic memory card

Simatic memory card Memory cards are storage devices designed for the S7-1500/S7-1200 and LOGO series. These are special Windows-compatible SD cards designed for heavy use. The cards are available in a special format, the price is sky-high, and they are very easy to damage; never format them with Windows!

You can only delete files and folders. Formatting the SIMATIC memory card with Windows tools will render it unusable as storage for an S7 CPU. This would be unfortunate because these SD cards are quite costly.

Memory cards for SIMATIC S7-1200 and S7-1500 PLC series in sizes 4 MB, 12 MB, 24 MB, 256 MB, and 2 GB.

Folders on SD card
FolderDescription
SIMATIC.S7SThe PLC program is stored here and is loaded into the working memory by the PLC at startup, along with the hardware configuration elements. If the card or file is missing, the PLC will not start
FWUPDATE.S7SFirmware update files for CPU and I/O modules
SINAMICS.S7SIf “SINAMICS Integrated” is configured: Project data of SINAMICS Integrated.
SIMATIC.HMIHMI-relevant data
SET_PWD.S7SFolder for Password
MCRC“Motion Control Runtime Component” folder for Motion Control UPD files
DEVICE_INFO.S7SFolder for device information
DataLogsDataLog files
RecipesRecipe files
UserFilesUser data
BackupsBackup files
DUMP.S7SService data files
Simatic functions that modify the contents of the SD card
BlockFunction NameDescription
FBFileWriteCWrite file on the memory card
FBFileDeleteDelete file on the memory card
FBSET_TIMEZONESet time zone
SFC 84WRIT_DBLWrite to the data block in the load memory
SFC 84CREATE_DBCreate a data block
SFC 95DELETE_DBDelete a data block
SFB 140DataLogCreateCreate a data log
SFB 142DataLogWriteWrite a data log
SFB 143DataLogClearClear a data log
SFB 144DataLogCloseClose a data log
SFB 145DataLogDeleteDelete a data log
SFB 147DataLogOpenOpen a data log
SFB 148DataLogNewFileData log in a new file
SFB 1003RecipeExportExport a recipe