Cyclic Transmission Stop And Restart - Mitsubishi Electric MELSEC SW1DNC-CCIEF-B User Manual

Cyclic transmission stop and restart

During debugging and other operations, cyclic transmission can be stopped (Data reception from the slave stations and data
transmission from the own station can be stopped). The stopped cyclic transmission can be restarted. Transient transmission
is not stopped.
• The link start/stop is not available in loop test mode.
• Cyclic transmission can be started and stopped with link special relay (SB) and link special register (SW).
(Page 188 Link Special Relay (SB) List, Page 199 Link Special Register (SW) List)
Personal computer
User
program
Link refresh
Driver
Setting method
Cyclic transmission stop and restart are operated on the "Link Start/Stop" screen. (Page 131 Link start/stop)
When the board is reset or the system is powered OFF and then ON
Even if cyclic transmission was stopped by link stop, it will be restarted by resetting the board or powering OFF and then ON
the system.
Stations to which the link start cannot be executed
The link start cannot be executed to the following stations.
• Station where cyclic transmission was stopped due to an error
• Station where link was stopped by a command from another station
• Station where link was stopped by link special relay (SB) or link special register (SW)
*1 Selecting "Forced Link Start" will start the link.
Station No.0
Master
station
(Board)
RX,RWr
Station
No.1
Station
No.2
Station
No.3
RY,RWw
Station
No.1
Station
No.2
Station
No.3
Cyclic transmission
stopped
Station No.2
Station No.1
Slave station
Slave station
RX,RWr
Station No.1
RX,RWr
Station No.2
RY,RWw
Station No.1
RY,RWw
Station No.2
*1
*1
Station No.3
Slave station
RX,RWr
Station No.3
RY,RWw
Station No.3
5 FUNCTIONS
67
5.2 Cyclic Transmission
5