Appendix 3 List Of Link Special Register (Sw) - Mitsubishi Electric RD78G4 User Manual

Appendix 3
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.
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 No. 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
SW0040 Network No.
SW0042 Station No.
SW0043 Mode status of own
station
SW0045 Module type
SW0046 to IPv4 address
SW0047
SW0049 Cause of data link stop
APPX
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Appendix 3 List of Link Special Register (SW)

List of Link Special Register (SW)
Description
Stores the network No. of the own station.
Range: 1 to 239
Stores the station No. of the own station.
Range:
• Master station: 125
Stores the module operation mode setting or communication mode of the own station.
0: Online mode
2: Offline mode
Stores the hardware status of the own station.
SW0045
Model type
00: Module
01: Board
10: HMI (Human Machine Interface)
Shows the IP address (IPV4) set in the own station.
SW0046 (1)
SW0047
(3)
(1): Third octet
(2): Fourth octet
(3): First octet
(4): Second octet
Stores the cause which stopped the data link of the own station.
00H: At normal communication or power-on
02H: Monitoring time timeout
05H: No slave station (master station only)
13H: Own station Nos. duplication
14H: Master station duplication (master station only)
18H: Parameter error
19H: Parameter communication in progress
20H: CPU module moderate error, major error
60H: Illegal ring connection (master station only)
(Also used in the CLPA conformance test.)
b15 to
Not used
(2)
(4)
b2 b1 b0