Omron Sysmac NX701 User Manual page 25

Data Backup
• We recommend that you back up the present values of variables while the retained variables are not
refreshed.
If you back up while the values of retained variables are refreshed, the data may not be saved cor-
rectly.
For information on Backup Functions and a backup for present values of variables, refer to the
NJ/NX-series CPU Unit Software User's Manual (Cat. No. W501).
Restoring Data
• 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.
• The absolute encoder home offsets are backed up with a Battery in the CPU Unit as absolute
encoder information. If any of the following conditions is met, clear the absolute encoder home off-
sets 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.
Transferring Programs
• 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.
Battery Replacement
• 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
saved data may be lost.
• We recommend 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 malfunctions. The Bat-
tery can be 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.
After you replace the Battery, connect the Sysmac Studio and clear the Low Battery Voltage error.
Fan Unit Replacement
• Do not touch the heatsink inside the CPU Unit immediately after turning OFF the power supply.
Doing so may result in burn injury.
NX-series CPU Unit Hardware User's Manual (W535)
Precautions for Safe Use
23