Appendix 3 Link Special Register (Sw) List - Mitsubishi Electric MELSEC-Q Series User Manual

Appendix 3 Link Special Register (SW) List

The link special register (SW) stores the information during data link as a numerical value.
Error locations and causes can be checked by the using and monitoring the link special
register (SW) in programs.
(1) Application of link special registers (SW)
(2) Link special register (SW) refresh
(3) Ranges to which data are stored by users and by the system
(4) Link special register (SW) list
By using link special registers (SW), the status of CC-Link IE Field Network can be
checked from HMI (Human Machine Interfaces) as well as GX Works2.
The link special register (SW) uses "Transfer SW" of the refresh parameters to refresh
the device of the CPU module. (Refer to Section 7.6.)
The following ranges correspond to when the link special registers (SW) are assigned
from SW0000 to SW01FF.
• Stored by users: SW0000 to SW001F
• Stored by the system: SW0020 to SW01FF
The following table shows the link special registers (SW) when they are assigned from
SW0000 to SW01FF.
POINT
• Do not write any data to an area whose number is not on the link special register
(SW) list. Doing so may cause malfunction of the programmable controller
system.
• For the usage of the link special register (SW), refer to Section 11.3.
Appendix - 16
Appendices