Mitsubishi Electric MELSEC Q Series Reference Manual page 185

5 PARAMETER SETTINGS
5 - 28
POINT
When B/W points less than the following are set in [Device] under [PLC parameter],
set refresh parameters accordingly.
Or, increase the B/W points to the following value or more in [Device].
No. of modules
1
2
3
4
Device points in [Device]
B
8K points
8K points
6K points
8K points
MELSEC-Q
W
8K points
8K points
6K points
8K points
5 - 28