Mitsubishi Electric CC-Link IE Basic Reference Manual page 27

■An abnormal response received from a slave station
The master station immediately disconnects the slave station regardless of the timeout time and the number of times for
disconnection detection set in the link scan settings.
The following table lists the special relay and special register operations when a slave station is disconnected.
Special relay/special register
'Cyclic transmission status' (SM1536)
'Cyclic transmission status of each station'
(SD1536 to SD1539)
'Data link status' (SM1540)
'Data link status of each station' (SD1540 to
SD1543)
Some slave stations are equipped with a function that makes them disconnected without being a faulty
*1
station . For details, refer to the manuals of the slave station used.
*1 Since the slave station does not become a faulty station, 'Data link status' (SM1540) and 'Data link status of each station' (SD1540 to
SD1543) do not change.
Operation
Remains turned on.
The bit corresponding to the station number of the disconnected slave station is turned off.
Turns off and on.
The bit corresponding to the station number of the disconnected slave station is turned on (indicating that the
slave station is a faulty station).
7 FUNCTIONS
25
7.1 Cyclic Transmission
7