Appendix 5 List Of Link Special Register (Sw) - Mitsubishi Electric MELSEC iQ-R Series User Manual

Appendix 5
The link special register (SW) stores the information during data link as a numerical value. Faulty areas and causes can be
checked by using or monitoring the link special register (SW) in programs.
Application of link special register (SW)
By using link special register (SW), the status of CC-Link IE TSN can be checked from HMI (Human Machine Interfaces) as
well as the engineering tool.
Refresh of link special register (SW)
To use link special register (SW), set them in "Refresh Settings" under "Basic Settings" so that they are refreshed to the
devices or labels of the CPU module. ( Page 99 Refresh Settings)
Range where data is stored by users and range where data is stored by the system
The following ranges correspond to when the link special register areas (SW) are assigned from SW0000 to SW0FFF.
• Stored by users: SW0000 to SW001F
• Stored by the system: SW0020 to SW0FFF
List of link special register (SW)
The following table lists the link special register areas (SW) when they are assigned from SW0000 to SW0FFF.
Do not write any data to an area whose number is not on the following list or ranges where data is stored by
the system. Doing so may cause malfunction of the programmable controller system.
No. Name
SW001A REMFR/REMTO
instruction
resend count
SW001B REMFR/REMTO
instruction
response wait
timer time
SW0030 Link dedicated
instructions
processing result
CH1
SW0031 Link dedicated
instructions
processing result
CH2
SW0040 Network number
SW0042 Station number
SW0043 Mode status of
own station
APPX
274

Appendix 5 List of Link Special Register (SW)

List of Link Special Register (SW)
Description
Set the number of resends for the REMFR/REMTO/REMFRD/REMTOD
instruction.
0: Not resent (default)
Other than the above: Number of times that is set, 1 to 15 (times)
Set the response wait time for the REMFR/REMTO/REMFRD/REMTOD
instruction.
0: 10 seconds (default)
Other than the above: Number of seconds that is set, 1 to 32767 (seconds)
Stores the processing results of the link dedicated instruction that used channel 1
of the own station.
0: Completed successfully
1 or greater: Completed with an error (Error code is stored.)
Stores the processing results of the link dedicated instruction that used channel 2
of the own station.
0: Completed successfully
1 or greater: Completed with an error (Error code is stored.)
Stores the network number of the own station.
Range: 1 to 239
Stores the station number of the own station.
Range:
• Master station: 125
• Local station: 1 to 120, 255 (station number not set)
Stores the module operation mode setting or communication mode of the own
station.
0: Online mode/Unicast mode
1: Online mode/Multicast mode
2: Offline mode
B: Module communication test mode
Availability
Master Local station
station
Unicast Multicast
mode mode
  
  
  
  
  
  
*1
  