1-9
Section 1 Specifications
1-3-5 User FB instance memory area
The user FB instance memory area is an instance memory area dedicated to each user FB used internally in the PLC.
G
Key points:
1) The size of the user FB instance memory area can be changed taking those of other areas into account.
For the details of memory size change, see “3-3-2 CPU memory size definition.”
2) When setting an initial value in the user FB internal memory, “No. of words in user FB instance area that are defined in
the variable worksheet” x 9/8 is required for the user FB initial value setting area.
3) You can select whether or not to clear the memory for saved attributes in this area when transferring the project.
User FB
instance memory
Unit with 14/24 points
: 4K words
Unit with 32/40/60 points
: 8K words
Notes:
The default values are shown in the left figure.
