Omron NJ101-10 Series, Руководство пользователя

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Disconnecting Slaves
If a slave is disconnected, slaves connected after the designated slave (on the output side) in a daisy
chain are disconnected at the same time. Slaves connected before the disconnected slave (on the in-
put side) and slaves connected beyond Junction Slaves continue to operate.
(If (1) is disconnected in the following figure, (2) and (3) are also disconnected.)
Disconnected
slaves
(3)
(2)
(1)
Simultaneously
disconnected
slaves
Slaves that
continue to operate
Junction Slave
When the connected slave is disconnected with an instruction or from the Sysmac Studio, the status of
the system-defined variables for the slaves are listed in the following table.
System-defined variable Description Value
_EC_RegSlavTbl[]
(Registered Slave Table) This variable shows the slaves that are
registered in the network configuration
information. Remains TRUE.
_EC_EntrySlavTbl[]
(Network Connected Slave Table) This variable shows the slaves that are
registered in the network configuration
information and connected to the net-
work.
Remains TRUE.
*1
_EC_MBXSlavTbl[]
(Message Communications Enabled
Slave Table) This variable shows the slaves that are
registered in the network configuration
information and able to perform mes-
sage communications.
Changes to FALSE.
*2
_EC_PDSlavTbl[]
(Process Data Communicating Slave
Table) This variable shows the slaves that are
registered in the network configuration
information and performing process da-
ta communications. Changes to FALSE.
_EC_DisconnSlavTbl[]
(Disconnected Slave Table) This variable shows the slaves that are
registered in the network configuration
information and disconnected from the
network. Changes to TRUE.
*1. After the slave is disconnected, it changes to FALSE when the slave is removed from the actual network
configuration.
9 Troubleshooting
9-34
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)