Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 404

(b) Device setting
Set each number of points for the extended data register (D) and extended link register (W) in the File Register
Extended Setting in the Device tab of the PLC parameter dialog box. Assign a part of the points set for the file
register (ZR) in the PLC file tab to the extended data register (D) and extended link register (W). The latch
range can be changed if necessary.
If data are to be latched, specify the latch range.
• Latch (1) and (2) of the extended data register (D)
• Latch (1) and (2) of the extended link register (W)
Set these points so that the total is equal to
the file register size set in the PLC file tab.
Once the points for the extended data register (D) and extended link register (W) is set, areas for these devices
are reserved in the file register file.
(3) Checking the points by the special register
The points for each of the file register (ZR), extended data register (D), and extended link register (W) can be
checked in the following special register areas.
• SD306, SD307: File register (ZR)
• SD308, SD309: Extended data register (D)
• SD310, SD311: Extended link register (W)
402
Device
D0
Data
register
D12287
D12288
Extended
data
register
D63487
The number of file register points set in the
PLC file tab is displayed.
Specify the latch range if data are to be latched.
Actual area
Internal user device
D0
Points for data
register
D12287
File register file
ZR0
Points for
file
register
ZR1112063
D12288
Points for
extended
data
register
D63487
Points for
W2000
extended
link register
Areas for the
extended data
register and
extended link register
are reserved in this
order, after the area
for the file register