Lenze DDS Function library MemDrv - Manual (Page 9)

Function library LenzeMemDrv.lib
Introduction
2.1 General information about the memory management
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LenzeMemDrv.lib EN 1.1
2 Introduction
2.1 General information about the memory management
Lenze PLCs offer the oppportunity to copy parts of the variable memory of the PLC (e.g. global
variables, arrays, etc.) into a backup memory. In this way, you can, for instance, create recipe
memories or measured−value memories.
2.2 Overview of the memory management functions
The below figure gives you an overview of the memory management functions available:
RAM FLASH
Block 1
64 KByte
Block 2
64 KByte
Segment 1
64 KByte
Segment 2
64 KByte
Segment n
64 KByte
L_MemSaveRamToFlash
L_MemLoadRamFromFlash
L_MemClearFlash
L_MemCopyToRam
PLC variables
L_MemCopyFromRam
L_MemWriteWORD
L_MemWriteDWORD
L_MemReadWORD
L_MemReadDWORD L_MemGetStateOfMemory
State function Memory transfer function
L_MemWriteINT
L_MemWriteDINT
L_MemReadINT
L_MemReadDINT
Block n
64 KByte L_MemCompareMemory
Access via Codes Download from Lenze software tools
Drive PLC Developer Studio
Global Drive Loader
L_MemGetStateDriver
Note!
The type and size of the backup memory depends on the Lenze PLC used. This is why you cannot
use all functions of the LenzeMemDrv.lib function library for all Lenze PLCs.
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In the following sections you can find an overview of the functions supported by the individual
Lenze PLCs.