Buffer Memory Assignments - Mitsubishi MELSEC Q Series User Manual

3 SPECIFICATIONS

3.4 Buffer Memory Assignments

Address
CH1
Hexadecimal Decimal
0 0
H
1 1
H
2 2
H
3 3
H
4 4
H
5 5
H
6 6
H
7 7
H
8 8
H
9 9
H
A 10
H
B 11
H
C 12
H
D 13
H
E 14
H
F 15
H
10 16
H
11 17
H
12 18
H
13 19
H
14 20
H
15 21
H
16 22
H
17 23
H
18 24
H
to to
1F 31
H
1: The initial values are set when the power is turned on or the programmable controller CPU is reset.
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(1) Buffer memory assignment list
Buffer memory assignments (without battery backup) for the QD62 (E/D) are
listed in the table below.
The initial values are set for the buffer memory when the power is turned on or
the programmable controller CPU is reset.
The contents of the buffer memory can be read/written using the FROM/TO
commands in the sequence program or the automatic refresh function of the
programmable controller CPU.
CH2
Hexadecimal Decimal
20 32
H
Preset value setting
21 33
H
22 34
H
Present value
23 35
H
24 36
H
Coincidence output point set No. 1
25 37
H
26 38
H
Coincidence output point set No. 2
27 39
H
28 40 Overflow detection flag
H
29 41 Counter function selection setting
H
2A 42 Sampling/periodic setting
H
2B 43 Sampling/periodic counter flag
H
2C 44
H
Latch count value
2D 45
H
2E 46
H
Sampling count value
2F 47
H
30 48
H
Periodic pulse count previous value
31 49
H
32 50
H
Periodic pulse count present value
33 51
H
34 52
H
Ring counter minimum value
35 53
H
36 54
H
Ring counter maximum value
37 55
H
38 56
H
to to
System area
3F 63
H
Set data
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
MELSEC-Q
Initial value
Read/write
1
Read/write
0
enabled
0 Read only
Read/write
0
enabled
0 Read only
Read/write
0
enabled
0 Read only
Read/write
0
enabled
— —
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