Appendix 5 Link Special Register (Sw) List - Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual

Appendix 5
In the link special register (SW), data link information is stored as numerical values. By monitoring it, faulty areas and
their causes can be checked.
(1) Areas to which data are stored by the system and a user
• Areas to which data are stored by the system: SW0000 to SW1FFF
• Area to which data are stored by a user: None
(2) Link special register (SW) list
The following lists link special registers (SW).
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.
No. Name
SW0042 Station No.
SW0043 Mode status
Communication status (own
SW0047
station)
Cause of communication
SW0048
interruption
SW0049 Cause of data link stop
SW004B Module status (own station)
Connection status (own
SW0064
station)
Link Special Register (SW) List
Stores the station number of own station.
Range: 1 to 64, 0000H (Out-of-range station No.)
Stores the mode of own station.
0: Online
2: Offline
9: Unit test
Stores the communication status of own station.
0: Data link in progress
2: Data link stopped
5: Offline
Stores the cause of interruption in the communication of own station.
00H: At normal communication or power-on
33H: Disconnection or reconnection in progress
40H: Offline mode
Stores the cause which stopped the data link of own station.
00H: At normal communication or power-on
02H: Data link monitoring timer timeout
10H: Parameter not received
18H: Parameter error
19H: Parameter communication in progress
20H: Error detected
Stores the head module status of own station.
01H: STOP (Normal)
02H: STOP (Stop error)
03H: STOP (Continuation error)
04H: RUN (Normal)
05H: RUN (Continuation error)
0FH: Initial processing
Stores the connection status of own station.
00H: Normal (communication in progress on CNA and CNB)
01H: Normal (communication in progress on CNA, communication not in progress on CNB)
11H: Disconnecting (communication not in progress on CNA or CNB)
21H: Disconnecting (establishing line on CNA, communication not in progress on CNB)
22H: Disconnecting (establishing line on CNA and CNB)
Description
APPENDICES
A
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