Precautions for Safe Use
• Make sure that the required data, including the user program, configurations, settings, and
variables, is transferred to a CPU Unit that was replaced and to externally connected devices
before restarting operation. Be sure to include the tag data link settings and routing tables,
which are stored in the CPU Unit.
• The absolute encoder home of
fsets are retained in the CPU Unit as absolute encoder infor-
mation.
When you change the combination of the CPU Unit and Servomotor, e.g., when you add or
replace a Servomotor, define the absolute encoder home again.
Precautions for Correct Use
• If you replace a slave or Unit, refer to the operation manual for the slave or Unit for informa-
tion on the data required for individual slaves or Units and redo the necessary settings.
• If you use the OPC UA server function, refer to the NJ/NX-series CPU Unit OPC UA User
’s
Manual (Cat. No. W588) for the description of how to replace CPU Units.
7 Inspection and Maintenance
7-5
NX-series NX502 CPU Unit Hardware User's Manual (W629)
7-1 Cleaning and Maintenance
7
7-1-3 Unit Replacement Precautions
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