Omron NX Series User Manual page 129

Precautions for Correct Use
Checking the Serial Numbers of NX Units
If the Serial Number Check Method setting on the EtherCAT Coupler Unit is set to Setting =
Actual device, temporarily change this setting to None, and then replace the NX Unit. Get the
serial number of the new NX Unit, and then set the Serial Number Check Method setting on the
EtherCAT Coupler Unit to Setting = Actual device again.
If you replace the NX Unit with the Serial Number Check Method setting set to Setting = Actual
device, a Unit Configuration Verification Error will occur.
Refer to the user's manual of the Communications Coupler Unit for details on the Serial Num-
ber Check Method setting for the EtherCAT Coupler Unit.
Additional Information
• Refer to the 4-1 Installing NX Units on page 4-2 for the procedures to mount and remove the
NX 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.
NX-series System Unit User's Manual (W523)
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6 Inspection and Maintenance
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