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MELSEC-Q
3   SPECIFICATIONS 
 
3.4 Buffer Memory 
3.4.1 Buffer memory assignment 
This section describes the buffer memory assignments of the A/D converter modules. 
 
(1)    Buffer memory assignment of Q64AD-GH 
POINT 
 
Do not write data from system area or sequence program to the buffer memory 
area where writing is disabled. Doing so may cause malfunction. 
 
Table 3.8 Buffer memory assignment of Q64AD-GH (1/5) 
Address 
Description 
Default 
value 
Read/Write 
1
 
Reference
Hexadecimal Decimal 
0H  0  A/D conversion enable/disable setting  0000H R/W
2
 
Section 
3.4.2 
1H 1 
CH1 Average time/Average number of times/Move average
/Time constant settings 
0 R/W
2
 
Section 
3.4.3 
2H 2 
CH2 Average time/Average number of times/Move average/
Time constant settings 
0 R/W
2
 
3H 3 
CH3 Average time/Average number of times/Move average/
Time constant settings 
0 R/W
2
 
4H 4 
CH4 Average time/Average number of times/Move average/
Time constant settings 
0 R/W
2
 
5H 5 
System area  —  —  — 
to to 
8H 8 
9H  9  Averaging process specification  0  R/W
2
 
Section 
3.4.5 
AH  10  A/D conversion completed flag  0  R 
Section 
3.4.6 
BH  11  CH1 Digital output value(16Bit)  0  R 
Section 
3.4.7 
CH  12  CH2 Digital output value(16Bit)  0  R 
DH  13  CH3 Digital output value(16Bit)  0  R 
EH  14  CH4 Digital output value(16Bit)  0  R 
FH 15 
System area  —  —  — 
to to 
12H 18 
13H 19 Error code  0  R 
Section 
3.4.8 
14H 20 Setting range  0  R 
Section 
3.4.9 
15H 21 System area  — —  — 
16H  22  Offset/gain setting mode offset specification  0  R/W  Section 
3.4.10 
17H  23  Offset/gain setting mode gain specification  0  R/W 
18H 24 
System area  —  —  — 
to to 
1DH 29