File Memory
EM File Memory-related
Functions
Function
In active
CPU Unit
Writing to EM file
Accessed.
memory by FWRIT
instruction
Reading from EM file
memory by FREAD
instruction
2-5-2
Files Handled by CPU Unit
General-use Files
Files Transferred
Automatically at Startup
70
The following table shows the operations of the EM file memory-related func-
tions.
EM file memory
In standby
CPU Unit
Accessed
When a file is written to the active CPU
Unit's EM file memory, the file is simul-
taneously written to the standby CPU
Unit's EM file memory. FWRIT instruc-
tion execution is synchronized for the
active and standby CPU Units.
Not
The FREAD instruction is executed for
accessed.
both CPU Units, and the data read
from the active CPU Unit's EM file
memory is used by both CPU Units.
Files are ordered and stored in the Memory Card or EM file memory accord-
ing to the file name and the extension attached to it. File names handled by
the CPU Unit (i.e., file names that can be read) are set as shown in the follow-
ing tables.
File type
Data files
Program files
Parameter files
File type
Data files
Program files
Parameter files
Data matching method
Contents
Specified range in I/O
Binary
memory
Text
CSV
All user programs
PLC Setup, registered I/O tables,
routing tables, CPU Bus Unit set-
tings, SYSMAC LINK link tables, and
Controller Link link tables
Contents
DM Area data (stores data for
specified number of words start-
ing from D20000)
DM Area data (stores data for
specified number of words start-
ing from D00000)
EM area for bank No. @ (stores
data for specified number of words
starting from E@_00000)
EM area for bank No. @ (stores
data for specified number of words
starting from E@_00000)
Note CS1D-CPU68HA only
All user programs
PLC Setup, registered I/O tables,
routing tables, CPU Bus Unit set-
tings, SYSMAC LINK link tables,
and Controller Link link tables
Section 2-5
Note
When referencing file mem-
ory-related status, use the
status for the active CPU Unit
(word A343).
File name
Extension
∗∗∗∗∗∗∗∗
.IOM
.TXT
.CSV
∗∗∗∗∗∗∗∗
.OBJ
∗∗∗∗∗∗∗∗
.STD
File name
AUTOEXEC
.IOM
ATEXECDM
.IOM
ATEXECE@
.IOM
(EM bank No.0
to C(Hex))
AUTOEM@@
.IOM
(@@: EM bank
No.0D to
18(Hex))
AUTOEXEC
.OBJ
AUTOEXEC
.STD
Need help?
Do you have a question about the SYSMAC CS1D-PD Series and is the answer not in the manual?