5
MEMORIES AND FILES USED IN CPU MODULE
5.1 Basic Model QCPU
5.1.5 Standard ROM program execution (boot run) and writing
5 - 15
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
(3) Additions/changes to standard ROM files
Since all files stored in the standard ROM are automatically deleted when files are to
be written to the standard ROM, additions/changes to the stored files cannot be made
directly.
Observe the following steps.
1) Choose [Online] [Read from PLC] on GX Developer and read all files from
the standard ROM.
2) Make necessary additions/changes to the read files.
3) Write the modified files to the program memory.
4) Choose [Online] [Write to PLC (Flash ROM)] [Write the program memory
to ROM...], and copy these files to the program memory.
(4) Precautions
(a) Setting the communication time check period ( "Check at communication
time" ) in GX Developer
When files are written to the standard ROM, the communication is checked for
180 seconds if the communication time check period ( "Check at communication
time" ) is set to 180 seconds or less in GX Developer.
If an error occurs, extend the set time on the Transfer setup screen in GX
Developer.
(b) CC-Link Writing files from GX Developer on another station via CC-Link
Since long processing time is required for writing files to the standard ROM, set
the CPU monitoring time setting (SW0A) of CC-Link to 180 seconds or more.
Remark
Refer to the following manual for details on the communication time check period
( "Check at communication time" ) setting and the CPU monitoring time
( "Watchdog time" ) setting.
GX Developer Version 8 Operating Manual
Figure 5.12 Write from GX Developer of other station (via CC-Link)
GX Developer of other station
CPU module where file is
written to standard ROM