5
MEMORIES AND FILES USED IN CPU MODULE
5.1 Basic Model QCPU
5.1.4 Standard RAM
5 - 9
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
5.1.4 Standard RAM
(1) Definition of standard RAM
The standard RAM is a memory for file registers. (Q00CPU and Q01CPU only)
File registers in the standard RAM allow fast access like data registers.
(2) Storable data
The standard RAM can store one file of file register.
( Section 5.1.1(2))
(3) Before using the standard RAM
• Make sure to format the standard RAM by GX Developer before using Q00CPU
or Q01CPU of the function version A
• Q00CPU and Q01CPU of the function version B do not need to be formatted.
(Formatting the standard RAM using GX Developer to Q00CPU or Q01CPU of
the function B, an error code "4150H" will be displayed on the GX Developer.)
(a) Formatting
To format the standard RAM, choose [Online] [Format PLC memory] on GX
Developer, and select "Standard RAM" as the target memory.
Figure 5.6 Standard RAM formatting
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