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5
MEMORIES AND FILES HANDLED BY CPU MODULE
5.1.3 Standard ROM
(1) Definition of standard ROM
The standard ROM is used to execute boot run by the CPU module.
The standard ROM is used to save programs and parameters without battery backup.
The program stored in the standard ROM is booted (read) to the program memory
(
(2) Storable data
The standard ROM can store parameters, programs and device comments.
Refer to Section 5.1.1 (2) for the list of data that can be stored into each memory.
(3) Checking the memory capacity
Section 5.1.2) to perform operation.
To check the memory capacity, choose [Online]
Developer.
1) Select "Standard ROM" as the target memory on the Read from PLC screen.
2) Click the
Free space volume
3) The memory capacity appears in the Total free space volume field.
2) Click Free space volume button.
Diagram 5.5 Memory capacity checking procedure
[Read from PLC] on GX
button.
1) Select target memory.
3) Memory capacity is displayed.
5.1 Memories by CPU Module
5.1.3 Standard ROM
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