14 Maintenance and Inspection
14 - 6
NX-series EtherCAT Coupler Unit User’s Manual (W519)
• Refer to 6-1 Installing Units on page 6-2 for the procedures to mount and remove the Ether-
CAT Coupler Unit.
• Refer to the NJ-series CPU Unit Built-in EtherCAT Port User's Manual (Cat. No. W505) for
the procedures to disconnect and connect the EtherCAT Coupler Unit from and to the Ether-
CAT network.
• Refer to NJ-series CPU Unit Software User’s Manual (Cat. No. W501-E1-06 or later) for the
procedures for restoring and comparing data.
This section describes the basic replacement procedures for the NX Units that are mounted after the
EtherCAT Coupler Unit.
The procedure may differ from the one that is described below depending on the model number of the
NX Unit. Refer to the manual for the specific NX Unit to replace, in addition to this manual.
1 Turn OFF the power supply to all of the equipment or disconnect the EtherCAT Slave Terminal
that includes the NX Unit to replace from the EtherCAT network.
2 Turn OFF the Unit power supplies and I/O power supplies for the EtherCAT Slave Terminal.
3 Replace the NX Unit. If the NX Unit has hardware switches, set the hardware switches to the
same settings as on the original NX Unit.
4 Turn ON the Unit power supplies and I/O power supplies to the EtherCAT Slave Terminal.
5 Restore and verify data for the new NX Unit.
6 Turn ON the power supply to all of the equipment, or connect the EtherCAT Slave Terminal to
the EtherCAT network.
14-2-3 Basic Replacement Procedure for NX Units
Turn OFF the power supplies to the EtherCAT Slave Terminal.
Turn ON the power supplies to the EtherCAT Slave Terminal.
Replace the Unit.
Restore and verify the data.
Turn OFF the system power, or disconnect
the EtherCAT Coupler Unit from the EtherCAT
network.
Turn ON the equipment power or connect to the
EtherCAT network.
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