5
MEMORIES AND FILES USED IN CPU MODULE
5.1 Basic Model QCPU
5.1.3 Standard ROM
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O
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Per
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Me
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Func
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5.1.3 Standard ROM
(1) Definition of standard ROM
The standard ROM is a memory for performing the boot operation in the Basic model
QCPU.
The programs stored in the standard ROM are booted (read) to the program memory
(
Section 5.1.2) to perform operations.
(2) Storable data
The standard ROM can store parameters, intelligent function module parameters,
programs, device comments and device initial value data.
(
(3) Checking the memory capacity
To check the memory capacity, choose [Online] [Read from PLC] on GX
Developer.
1) Select "Standard ROM" as the target memory on the Read from PLC screen.
2) Click the
button.
3) The memory capacity appears in the Total free space volume field.
Figure 5.5 Memory capacity checking procedure
Free space volume
1) Select target memory.
2) Click Free space volume button.
3) Memory capacity is displayed.
