10-47
10 CPU Unit Functions
CJ2 CPU Unit Software User’s Manual
10-5 Memory Management
Functions
10
10-5-4 Replacing the Entire Program during Operation
z Example Program 2
In this example, the program/network symbol files for several devices and the program/network sym-
bol file for automatic transfer at startup (AUTOEXEC.OBJ or REPLACE.OBJ) are stored in a Mem-
ory Card. When the PLC is turned ON, the automatic transfer at startup file is read and then that
program is replaced later with a program files for different devices.
END
AUTOEXEC.OBJ
A650.15
A200.11
A343.15
ABC.OBJ
MOV
#A5A5
A651
First Cycle Flag
Memory Card
Detected Flag
Processing that determines
the type of device connected
and stores the corresponding
file name. In this example,
the file name "ABC" is
written in A654 to A657.
Replacement
Start Bit
Overwrite
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