Omron Sysmac NJ Series User Manual page 45

Network Configurations and Setup
 Enable/Disable Setting for Slaves
Use this function to select the EtherCAT slaves for communications with from among those regis-
tered in the network configuration information.
• You can design a network with future addition of EtherCAT slaves in mind, by setting EtherCAT
slaves that you plan to add at a later time to Disabled and then registering them in the network
configuration information on the EtherCAT master.
• You can change the EtherCAT slaves for communications based on the device configuration dur-
ing system operation.
You can enable/disable each slave in the Sysmac Studio. Refer to 5-5 EtherCAT Slave Parameter
Settings on page 5-20 for the setting procedure.
To enable/disable slaves during system operation, use the Enable/Disable EtherCAT Slave instruc-
tion. Refer to NJ/NX-series Instructions Reference Manual (Cat. No. W502) for details on this in-
struction.
 Cable Redundancy Function
Use this function to continue the communications with EtherCAT slaves, even if a communications
cable is broken in the EtherCAT communications path.
With the NJ/NX-series CPU Units, use Junction Slaves and configure a ring topology in the network
configuration. In the ring topology, the EtherCAT master can continue the normal communications
with the EtherCAT slaves even if there is only one point of disconnection in the communications
cables.
You can set the cable redundancy function from the Sysmac Studio. Refer to 5-2-2 Cable Redun-
dancy Setting on page 5-5 for the cable redundancy function.
Refer to 4-1-3 Ring Topology on page 4-4 for the ring topology.
Communications Control during Operation
 Wait Time Setting for Slave Startup
Use this function to set the wait time until all of the EtherCAT slaves are connected to the network.
When you use a slave that takes time to start, use a longer wait time setting to prevent errors.
Set the wait time for slave startup in the Sysmac Studio. Refer to 5-4 EtherCAT Master Parameter
Settings on page 5-14 for the setting procedure.
Communications Control at Error Occurrence
 Fail-soft Operation
Use this function to continue or stop the communications with EtherCAT slaves that are operating
normally, if a communications error occurs.
"Fail-soft operation" refers an operation that only normally operating EtherCAT slaves are allowed
to operate continuously.
The EtherCAT master can continue the communications with the EtherCAT slaves until the opera-
tion is stopped safely through the user program or user operation.
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
1 Introduction
1
1-13