5
MEMORIES AND FILES USED IN CPU MODULE
5.2 High Performance Model QCPU, Process CPU, Redundant CPU, Universal Model QCPU
5.2.6 Memory card
5 - 33
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
5.2.6 Memory card
(1) Memory card
A memory card is used to increase memory of the CPU module.
Available memory cards are the SRAM card, Flash card and ATA card.
(a) SRAM card
The file register can be written/read to/from the SRAM card by a sequence
program.
The SRAM card is used in the following cases.
• When the number of file register points is greater than the standard RAM
capacity
• When using the sampling trace function ( Section 6.14)
• When saving 17 or more error history data
Note5.7
( Section 6.18)
When using the SRAM card as a file register, data can be written/read to/from a
sequence program up to the following points.
• High Performance model QCPU, Process CPU,
Redundant CPU......Up to 1017k points
• Universal model QCPU......Up to 4086k points
(b) Flash card
Data can be read by a sequence program only.
Write data by GX Developer and read it by a sequence program.
Use the Flash card when data change will not be made.
A file register can be stored up to the following points.
• High Performance model QCPU, Process CPU,
Redundant CPU......Up to 1018k points
• Universal model QCPU.......Up to 2039k points
(c) ATA card
This is used for PLC user data (general-purpose data).
Using a file access instruction (such as the FWRITE instruction) in a sequence
program, access the PLC user data on the ATA card in CSV format/binary format.
Note7
Note7
Universal
UD
Note5.7
The Universal model QCPU cannot store the error history in the memory card. ( Section
6.18.2)
Note5.7
Universal
UD
To Next Page
Loading...
Need help?
General
