Omron NX102 series User Manual

9 Troubleshooting
9-34
NJ/NX-series CPU Unit Built-in EtherCAT Port User’s Manual (W505)
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
input side) and slaves connected beyond Junction Slaves continue to operate. (If (1) is disconnected in
the following figure, (2) and (3) are also disconnected.)
The status of the system-defined variables for disconnected slaves are listed in the following table. The
status in the following table are reached immediately after disconnection. This status does not change
even if a slave is physically removed from the actual network configuration or physically connected to
the actual network configuration again. The corresponding element in the Network Connected Slave
Table changes to FALSE when the slave is physically removed from the actual network configuration.
Disconnecting Slaves
System-defined variable name Description Value
_EC_RegSlavTbl[] (Registered Slave
Table)
This variable shows the slaves that are reg-
istered in the network configuration informa-
tion.
Remains TRUE.
_EC_EntrySlavTbl[] (Network Con-
nected Slave Table)
This variable shows the slaves that are reg-
istered in the network configuration informa-
tion and connected to the network.
The corresponding element
changes to FALSE when the slave
is removed from the actual network
configuration.
_EC_MBXSlavTbl[] (Message Commu-
nications Enabled Slave Table)
This variable shows the slaves that are reg-
istered in the network configuration informa-
tion and able to perform message
communications.
The corresponding element
changes to FALSE after the Ether-
CAT slave is disconnected from
the Sysmac Studio or with an
instruction.
_EC_PDSlavTbl[] (Process Data Com-
municating Slave Table)
This variable shows the slaves that are reg-
istered in the network configuration informa-
tion and performing process data
communications.
The corresponding element
changes to FALSE after the Ether-
CAT slave is disconnected from
the Sysmac Studio or with an
instruction.
_EC_DisconnSlavTbl[] (Disconnected
Slave Table)
This variable shows the slaves that are reg-
istered in the network configuration informa-
tion and disconnected from the network.
The corresponding element
changes to TRUE after the Ether-
CAT Slave is disconnected from
the Sysmac Studio or with an
instruction.
Disconnected
slaves
(3)
(2)
(1)
Simultaneously
disconnected
slaves
Slaves that
continue to operate
Junction Slave

Omron NX102 series Specifications

General

Brand	Omron
Model	NX102 series
Category	Controller
Language	English