Mitsubishi MELSEC Q Series Programming Manual page 118

(b) Instructions for a block of devices, including BMOV and FMOV
Device range checks are also conducted when indexing is performed.
However, if indexing has been conducted, there will be no error returned if the initial device
number exceeds the relevant device range.
3-28
2) Universal model QCPU and LCPU
The device range is checked. When the device number is outside the device
range, an operation error occurs.
For example, when12 k points are assigned to a data register, an error occurs
if the device number of the data register exceeds D12287.
The device range is checked even though indexing is executed.
With changing the settings of the PLC parameter, the device range is not
2
checked.*
*2: For changing the settings of the PLC parameter on GX Developer, refer to the following manual.
• QCPU User's Manual (Function Explanation, Program Fundamentals)
1) For the Basic Model QCPU, High Performance model QCPU, Process CPU,
and Redundant CPU
The device range is checked.
When the device number is outside the device range, an operation error
occurs.
For example, when 12 k points are assigned to a data register, an error occurs
if the device number of the data register exceeds D12287.
BMOV
MOV K2
BMOV D0 D12285Z1 K2
BMOV D0 D12287Z1 K2
DMOV K100
D12287
D12287 K2
D0
Z1
When D12287 is specified with the BMOV instruction,
the target devices are D12287 and D12288.
However, an operation error occurs because D12288
does not exist.
An operation error occurs since head device number
is D12289 that exceeds the device range.
When D12287 is specified with the DMOV instruction,
the target devices are D12287 and D12288.
However, an operation error occurs because D12288
does not exist.
This designates D12287 and D12288 as the
target devices for executing the BMOV instruction.
However, since D12288 does not exist,
an operation error occurs.