Using Link Special Relay (Sb) And Link Special Register (Sw) - Mitsubishi Electric MELSEC-Q Series User Manual

11.3 Using Link Special Relay (SB) and Link Special Register (SW)

This section describes how to use link special relays (SBs) and link special registers (SWs).
(1) Stop and restart of cyclic transmission
REMARK
For details on link special relay (SB) and link special register (SW), refer to Appendix
2 and Appendix 3.
Stop and restart of cyclic transmission are executed using the CC-Link IE Field Network
diagnostics as well as link special relays (SBs) and link special registers (SWs).
However, stop and restart of cyclic transmission cannot be executed for the station
(Note-1)
No.1 to 16 . (Refer to Section 9.4.)
(Note-1): The range from the station No.1 to 4 is valid in the 4-axis module, and the range from the station
No.1 to 8 is valid in the 8-axis module.
(a) Stop and restart of cyclic transmission (other stations)
(Cyclic transmission stop)
1) Specify the station to stop cyclic transmission in the following link special
registers (SWs).
• Specifying a target station
Link stop/start direction (SW0000)
• Specifying a station number
Link stop/start direction (SW0002 to SW0008)
2) Turn on System link stop (SB0003).
3) When the Simple Motion module accepts the request, System link stop
request accept status (SB0056) turns on.
4) When cyclic transmission stop is completed, System link stop completion
status (SB0057) turns on.
5) Station number of the station that sent the cyclic transmission stop request is
stored in Data link stop request station (SW004A). (It is stored in the station
that received the stop request.)
6) If cyclic transmission is stopped with error, an error code will be stored in Data
link stop status (entire system) (SW0053).
7) Turn off System link stop (SB0003).
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Chapter 11 PROGRAMMING