SaveData (Function)

SaveData will save a block of memory to a specific location in the persistent FLASH memory.

Note: there is a limited number of writes to the Flash Memory that make use of this function. Please read the Persistent Memory introductory section.

Input:

index : INT (1..192)

Location number the block of memory should be saved in.

data : ADR

Address of the memory block that should be saved.

datasize : INT (1..255)

Maximum size to save.

Returns: INT

(Only reported from firmware version 5.00 / R1.30.00)

Declaration:

FUNCTION SaveData;
VAR_INPUT
  index   : INT;
  data     : PTR;
  datasize : INT;
END_VAR;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
 
VAR
  xx   : ARRAY[1..100] OF SINT;
END_VAR;
 
BEGIN
  ...
SaveData(index:=10, data:=ADDR(xx), datasize:=SIZEOF(xx));
  // Persistent memory location number 10 will contain the contents of 'xx' after the call
  ...
END;
 
END_PROGRAM;