Mitsubishi MELSEC Q Series Handbook

4 INTELLIGENT COMMUNICATION MODULE REPLACEMENT
4 - 25
(4) Internal memory
(a) Memory to store a program to be executed
There is no difference between the QD51(-R24) and the A1SD51S.
(b) Communication memory
The communication memory for the A1SD51S can be accessed using only the special variable B@/
W@. However, the communication memory for the QD51(-R24) can be also accessed using a
sequence program (FROM/TO instructions). (The function was added.)
There is no precaution for when using an A1SD51S program for the QD51(-R24).
• Communication memory of the A1SD51S
• Communication memory of the QD51(-R24)
Item Description
Address
Programmable
controller CPU
BASIC program
FROM/TO
instruction
GETMEM/PUTMEM
instruction
Special variableB@/
W@
Communication with a
programmable controller
CPU
Buffer memory
0000
H
to 0BFF
H
0000
H
to 17FF
H
-
Communication between
tasks
Common memory -
1800
H
to 37FF
H
-
Reading/writing of the ON/
OFF data
Extension registers - - ED0000 to ED1023
System area - - -
Extension relays - - EM0000 to EM1023
System area - - -
Special registers - - ED9000 to ED9127
System area - - -
Special relays - - EM9000 to EM9127
System area - - -
Item Description
Address
Programmable
controller CPU
BASIC program
FROM/TO
instruction
GETMEM/PUTMEM
instruction
Special variableB@/
W@
Communication with a
programmable controller
CPU
Buffer memory
0000
H
to 0BFF
H
0000
H
to 17FF
H
-
Communication between
tasks
Common memory
0C00
H
to 1BFF
H
1800
H
to 37FF
H
-
Reading/writing of the ON/
OFF data
Extension registers
1C00
H
to 1FFF
H
- ED0000 to ED1023
System area - - -
Extension relays
2380
H
to 23BF
H
- EM0000 to EM1023
System area - - -
Special registers
2400
H
to 247F
H
- ED9000 to ED9127
System area - - -
Special relays
2500
H
to 2507
H
- EM9000 to EM9127
System area - - -

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English