Precautions for Safe Use
24
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
• You cannot back up, restore, or compare some or all of the settings for certain slaves and Units. Also,
you cannot back up, restore, or compare data for disabled slaves or Units. After you restore data, suf-
ficiently confirm that operation is correct before you start actual operation.
• If any of the following conditions is met, clear the absolute encoder home offsets from the list of data
items to restore, and then restore the data. Then, define the absolute encoder home again. If you do
not define home, unintended operation of the controlled system may occur.
a) The Servomotor or Servo Drive was changed since the data was backed up.
b) The absolute encoder was set up after the data was backed up.
c) The absolute data for the absolute encoder was lost.
• When you use the program transfer from SD Memory Card whose Startup Mode setting is set to RUN
mode, the operating mode changes to RUN after the transfer is completed regardless of the status
and setting before the transfer. Use this function after you confirm that system startup does not cause
any problem.
• Always confirm safety at the connected equipment before you perform the following operations when
the device output hold configuration is set to enable. The equipment may operate unexpectedly
because the last status for outputs is retained.
a) Changing the operating mode of the CPU Unit
b) When downloaded
• The Battery may leak, rupture, heat, or ignite. Never short-circuit, charge, disassemble, heat, or
incinerate the Battery or subject it to strong shock.
• Dispose of any Battery that has been dropped on the floor or otherwise subjected to excessive
shock. Batteries that have been subjected to shock may leak if they are used.
• Apply power for at least five minutes before changing the Battery. Install a new Battery within five
minutes (at 25°C) of turning OFF the power supply. If power is not supplied for at least 5 minutes, the
retained clock data may be initialized.
• We recommend mounting or replacing the Battery with the power turned OFF to prevent the CPU
Unit’s sensitive internal components from being damaged by static electricity and to prevent malfunc-
tions. The Battery can be mounted or replaced without turning OFF the power supply. To do so,
always touch a grounded piece of metal to discharge static electricity from your body before you start
the procedure.
If the Low Battery Voltage error occurs after you mount the Battery, connect the Sysmac Studio and
clear the error.
• 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.
• 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.
Restoring Data
Transferring Programs
Battery Installation and Replacement
Unit Replacement
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