5
MEMORIES AND FILES USED IN CPU MODULE
5.1 Basic Model QCPU
5.1.2 Program memory
5 - 3
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
5.1.2 Program memory
(1) Definition of program memory
The program memory is a memory for storing programs required for operations in the
Basic model QCPU.
The programs stored in the standard ROM are booted (read) to the program memory
to perform operations.
(2) Storable data
The program memory can store parameters, intelligent function module parameters,
programs, device comments, device initial values and user setting system area data.
( Section 5.1.1(2))
POINT
If the total volume of the data to be stored into the program memory exceeds its
capacity, examine reducing the user setting system area data.
(3) Before using the program memory
Before using the program memory, be sure to format it by GX Developer.
(a) Formatting
To format the program memory, choose [Online] [Format PLC memory] on GX
Developer, and select "Program memory/Device memory" as the target memory.
Figure 5.2 Program memory formatting
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