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5 EtherCAT Communications
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
5-9 C
able R
edun
dan
cy F
unct
ion
5
5-
9-5 R
elation betw
een the Ne
twork Configur
at
ion Information
and the
Actual
Configura
tion
The following example shows a case of No. 4. In this example, the communications status changes
from the normal status to the ring disconnection status, and then the power supply to Device Y is turned
OFF, which turns OFF the power supply to Slave C to E and causes a minor fault. Slave A, B, F, and G
continue communications even after the minor fault occurs.
EtherCAT Master
Slave A
Junction Slave
Device X
Slave B
Slave C Slave D Slave F Slave G Slave E
Device Z Device Y (Power OFF)
Open circuit