1-4
Section 1 Specifications
1-3 Memory
1-3-1 Memory map
(1) Main unit with 14/24 points
%MW1.61440
%MW3.61440
Input/output memory
(I/Q)
512 words (8192 points)
Standard memory
(M)
0K word
Program memory
8K steps
Temporary area
8K words
* 1K = 1024
Retain memory
(M)
2K words
User FB instance memory
4K words
System FB instance memory
5.5K words
System memory
(M)
512 words
Special relay/register
(retain) (M)
4K words
Special relay/register
(non-retain) (M)
4K words
User FB instance memory
Initial value setting memory
4.5K words
Standard memory
(High-speed)
(M)
4K words
(Note 5)
(Note 1)
(Note 2)
(Note 3)
(Input) (Output)
IEC representation
Initial value setting area
for standard memory and
retain memory (Note 4)
%I %Q
%MW1.0
%MW1.4095
%MW3.0
%MW3.2047
%MW10.0
%MW10.511
Notes:
1) You can increase or decrease the size of the standard memory (excluding high-speed memory), retain memory, user FB
instance memory, and system FB instance memory by the loader. The default values are shown in the figure above. For
details, see “3-3-2 CPU memory size definition.”
2) The first 4K words of the standard memory (M) are used as a high-speed memory for high-speed access. You cannot
change the size.
3) For the input/output address assignment, see “1-4 I/O Address Assignment.”
4) You can set the initial values of the standard memory and retain memory using the free space of the program memory.
Initial values require 2.5 steps per variable.
5) The initial value setting memory is automatically allocated according to the size of the user FB instance memory and uses
he area of user FB memory x 1 1/8 words.
