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3 SPECIFICATIONS
3.5 QD51 (-R24) Internal Memory
Item
Communications with
Buffer memory
the programmable
controller CPU
Communications
Common memory
between tasks
Reading/writing
Expansion register
ON/OFF data
System Area
Expansion relay
System Area
Special register
System Area
Special relay
System Area
3 - 16
The following memory can be used by the user in the QD51 (-R24).
(1) Memory where programs for execution can be stored
• Program Area · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Refer to Section 3.5.1
This is memory where BASIC programs which run the QD51 (-R24) are stored.
The program area can execute a maximum of two tasks and it has a maximum
capacity of 64 k bytes.
(2) Memory for communications
Programmable
Content
controller CPU
FROM/TO command
0000
to 0BFF
H
0C00
to 1BFF
H
1C00
to 1FFF
H
2380
to 23BF
H
2400
to 247F
H
2500
to 2507
H
Address
GETMEM/PUTMEM
command
0000
to 17FF
H
H
H
1800
to 37FF
H
H
H
H
H
H
H
MELSEC-Q
BASIC Program
Special Variable
B@/W@
ED0000 to ED1023
EM0000 to EM1023
ED9000 to ED9127
EM9000 to EM9127
Reference
Section
Section
3.5.2
Section
3.5.3
Section
3.5.4
Section
3.5.6
Section
3.5.5
Section
3.5.7
3 - 16
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