Mitsubishi Electric MELSEC-A0J2H Series Handbook page 33

2
REPLACING THE CPU MODULE
Function Description
Number of input device (X)
*5
points (points)
Number of output device (Y)
*5
points (points)
Number of internal relay (M)
points (points)
Number of latch relay (L)
points (points)
Number of step relay (S)
points (points)
Number of annunciator (F)
points (points)
Number of edge relay (V)
points (points)
Number of link relay (B)
points (points)
Number of timer (T)
points (points)
Number of counter (C)
points (points)
Number of data register (D)
points (points)
Number of link register (W)
points (points)
Number of file register (R)
points (points)
Number of
Number of accumulator (A)
device points
points (points)
Number of (Z)
points (points)
Index
register
Number of (V)
points (points)
Number of nesting (N) points
(points)
Number of pointer (P)
points (points)
Number of interrupt pointer (I)
points (points)
Number of special relay (M)
points (points)
Number of special register (D)
points (points)
Number of link special relay
(SB)
points (points)
Number of link special register
(SW)
points (points)
Number of function input (FX)
points (points)
Number of function output
(FY)
points (points)
Number of function register
(FD)
points (points)
: Usable : Usable, however, a section of the specifications, i.e. setting methods, is different × : Not used
QnUCPU
A0J2HCPU
Q00UJCPU
512 8192
512 8192
8192
Total of
8192
2048
*6
8192
256 2048
× 2048
1024 8192
256 2048
256 1024
1024 12288
1024 8192
4096 ×
2 ×
1 20
1 ×
8 15
256 512
1 128
256 2048
256 2048
– 2048
– 2048
– 16
– 16
– 5
Precautions for replacement
Q00UCPU
8192
8192
8192
8192
*6
8192
2048
2048
8192
2048
1024
12288
8192
Q00UJCPU does not have a
file register.
32768 × 2 blocks
It is recommended to
substitute the data register (D).
As QCPU does not have an
accumulator, it is converted to
× a special register (SD718,
SD719) during the program
conversion from A  Q.
20
×
15
512
128
2048
2048
2048
2048
16
16
5
Reference
sections
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