Mitsubishi Electric MELSEC-Q Series - Page 207

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CHAPTER 6 PARAMETER SETTING
6
6.5 Refresh Parameters 6.5.1 Refresh parameter setting
*1 The bit device is set in 16-point units (Start: 0
H
to End: F
H
), and the word device is set in 1-point units.
*2 Default setting according to the number of modules and the mounted position is available. ( Page 221, Section
6.5.3)
*3 The LX/LY data of the same I/O numbers with the actual I/O (the range where actual modules are mounted) must be
refreshed to the area after the actual I/O area or to any other than LX/LY.
Transfer target CPU-side devices cannot overlap with the actual I/O areas.
● Avoid any duplicate settings of the programmable-controller-side device that is used for the following.
• Refresh parameters of network modules
• Auto refresh parameters of CC-Link modules
• I/O numbers used for I/O modules and intelligent function modules
• Auto refresh parameters of intelligent function modules
• Auto refresh using the CPU shared memory of the multiple CPU system
● Set the link refresh range properly so that it does not cross over the boundary between the internal user device and the
extended data register (D) or extended link register (W).
● Set only the link devices used in the CPU module as the link refresh range.
Doing so will reduce the points of the link refresh to the CPU module, resulting in a shorter link refresh time.
● When any of the station send ranges of the link device has been changed in the control station's "Assignment the CC IE
Control Network Range", check the link refresh range of each station. ( Page 183, Section 6.3)
Item Description
Assignment Method
Select a link device assignment method.
• Points/Start: Enter link device points and start I/O numbers.
• Start/End: Enter the start and end numbers of the link devices.
Transfer SB/SW
Link Side
Dev. Name Fixed to SB/SW
Points, Start, End
Set the SB/SW transfer range.
*1
(Setting range: 0000
H
to 01FF
H
, Default: Available
*2
)
PLC Side
Dev. Name Fixed to SB/SW
Points, Start, End
Set the start number of each SB/SW transfer range.
*1
(Setting range: 0000
H
to 07FF
H
, Default: Available
*2
)
Transfer 1 to 256
Link Side
Dev. Name
Select a transfer link device from the following.
• LB/LW/LX/LY
Points, Start, End
Set the link device transfer range.
*1
• LB (Setting range: 0000
H
to 7FFF
H
, Default: Available
*2
)
• LW (Setting range: 0000
H
to 1FFFF
H
, Default: Available
*2
)
• LX/LY (Setting range: 0000
H
to 1FFF
H
, Default: None)
*1
PLC Side
Dev. Name
Select a transfer device from the following.
• X,Y,M,L,B,T,C,ST,D,W,R,ZR (When LX is set on the Link side, C,T, and ST are
not selectable.)
Points, Start, End
Set the start number of each device transfer range.
*1
(Setting range: Device range of CPU module)