Mitsubishi Electric MELSEC Q Series Reference Manual page 218

(2) When using a file register as an LW transfer destination (Except for Q00JCPU
and QS001CPU)
Link-side device
LW0 to 1FFFF
LB0 to 7FFF
*1 The file register capacity differs for each CPU module.
For capacity of each CPU module, refer to the following.
User's Manual (Function Explanation, Program Fundamentals) for the CPU module used
*2 The contents of the file register are maintained even if the power goes from OFF to ON or when the CPU module is
reset.
When initializing the contents of the file register, the sequence program or programming tool must be used to clear the
data.
*3 Processing time differs depending on the storage location.
A large number of processing points will cause a longer sequence scan time.
It is convenient to use the following devices as target CPU-side devices of transfer from LW.
• When the transfer range value is 8K (1FFF
• When the transfer range value is 32K (7FFF
• When the transfer range value is 128K (1FFFF
Set the file register in "PLC File".
216
CPU-side device
Register a 128K-point file register to the standard RAM or a memory
ZR0 to 131071
card (RAM).
B0 to 7FFF Change the link relay (B) points from 8K to 32K.
H
CPU-side device setting method
*1*2*3
) or less: Link register (W)
) or less: File register (R)
H
) or less: File register (ZR)
H