Mitsubishi Electric MELSEC Q Series Reference Manual page 179

5 PARAMETER SETTINGS
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POINT
Either of the following settings must be made to use the entire device range (16K
points) of LB/LW.
1) Change the number of B/W device points. (Refer to the following
example.)
2) Make the refresh parameter settings so that B/W and other devices
will be assigned as the refresh destination devices of LB/LW.
(Refer to Section 5.1.5.)
[Example]
To change [Device] of [PLC parameter] in order to use all 16K points of
the LB and LW device range
Note the following points when assigning device points:
1) The total number of device points is 29K words for the High
Performance model QCPU, Process CPU, Redundant CPU, and
Universal model CPU.
2) The total number of bit devices must be 64K bits.
[In the case of Q25HCPU]
Input relay
Output relay
Internal relay
Latch relay
Link relay
Annunciator
Link special relay
Edge relay
Step relay
Timer
Retentive timer
Counter
Data register
Link register
Link special register
Word device total
Bit device total
Device total
F:2K
[Default]
X 8K
Y 8K
M 8K
L 8K
B 8K
F 2K
SB 2K
V 2K
S 8K
T 2K
ST 0K
C 1K
D 12K
W 8K
SW 2K
26.0K
44.0K
28.8K
[Default]
X:8K
Y:8K
M:8K
L:8K
B:8K
MELSEC-Q
[After change]
8K
8K
8K
4K
16K
2K
2K
2K
8K
2K
0K
1K
4K
16K
2K
26.0K
48.0K
29.0K
[After change]
X:8K
Y:8K
M:8K
L:4K
B:16K
F:2K
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