Appendix 2 Link Special Register (Sw) List - Mitsubishi Electric MELSEC Q Series Reference Manual

Appendix 2
The link special register (SW) stores information at data link in a numerical value.
The faulty part or cause can be checked by using the link special register (SW) in a sequence program or monitoring it.
(1) Application of link special register (SW)
The status of the CC-Link IE Controller Network module can be checked without a programming tool, using link
special register (SW).
(2) Mounting multiple network modules
The link special register (SW) of each network module is refreshed by the link special register (SW) of the CPU
module shown below when the refresh parameters of each network module remain default.
Item
Device No.
(3) Range where data are stored by users and range where data are stored by the
system
The following shows the range when the assignment range of link special register (SW) is SW0000 to SW01FF.
• Stored by users: SW0000 to SW001F
• Stored by the system: SW0020 to SW01FF
(4) Link special register (SW) list
Link special registers (SW) for which SW0000 to SW01FF are assigned are listed on the following pages.
● Do not write data to the area of the No. which does not exist in the link special register (SW) list.
Writing data to the area of the No. which does not exist in the list may cause malfunction of the programmable controller
system.
● For how to use link special register (SW), refer to the following.
Page 306, Section 8.3
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Link Special Register (SW) List
Module 1
SW0000 to SW01FF SW0200 to SW03FF
Module 2 Module 3
SW0400 to SW05FF
Module 4
SW0600 to SW07FF