5 EtherCAT Communications
5 - 24
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
The following table shows the relation between the network configuration information downloaded in an
NJ/NX-series CPU Unit supporting the cable redundancy function and the actual configuration.
5-9-5
Relation between the Network Configuration Information and the
Actual Configuration
No.
Network Con-
figuration
Information
Actual Configura-
tion
EtherCAT
Communica-
tions Status
Communications Status with a Cable Dis-
connected or Broken
1
Daisy chain
and branching
topology only
Daisy chain and
branching topol-
ogy only (same as
the network config-
uration informa-
tion)
Normal status
The communications status changes to the
minor fault status in which part of the slaves can
continue communications.
*1
*1. If a minor fault occurs, slaves not separated from the EtherCAT master operate according to
Fail-soft Opera-
tion Setting
of the CPU Unit. Slaves separated from the EtherCAT master cannot continue communications.
Refer to the
NJ/NX-series CPU Unit Built-in EtherCAT Port User’s Manual
(Cat. No. W505) for details on
Fail-soft Operation Setting.
2
Contains the ring
topology
Minor fault
All slaves can continue communications.
Removing a cable added from the network con-
figuration information and resetting the error
returns the communications status to the status
of No. 1.
3
Contains the
ring topology
Daisy chain and
branching topol-
ogy only
Ring disconnec-
tion status
The communications status changes to the
minor fault status in which part of the slaves can
continue communications.
*1
4
Contains the ring
topology (same as
the network config-
uration informa-
tion)
Normal status
The communications status changes to the ring
disconnection status in which all slaves can
continue communications. If a cable is discon-
nected or broken in this status, the status
changes to the minor fault status in which part
of the slaves can continue communications.
*1
Summary of Contents for R88D-1SN ECT Series
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