Precautions for Safe Use
Refer to the following manuals for precautions for safe use.
• NX-series CPU Unit Hardware User’s Manual (Cat. No. W535)
• NX-series NX502 CPU Unit Hardware User’s Manual (Cat. No. W629)
• NX-series NX102 CPU Unit Hardware User’s Manual (Cat. No. W593)
• NX-series NX1P2 CPU Unit Hardware User's Manual (Cat. No. W578)
• NJ-series CPU Unit Hardware User’s Manual (Cat No. W500)
• Sysmac Studio Version 1 Operation Manual (Cat. No. W504)
Turning ON the Power Supply
• It takes up to approximately five minutes to complete firmware update after the power is turned ON.
During that time, outputs will be OFF or values will be according to settings in the Units or slaves.
Also, external communications cannot be performed. Implement fail-safe circuits so that external de-
vices do not operate incorrectly.
After Downloading the Project
• Check the operation of the downloaded project for proper execution before you use it for actual op-
eration.
Actual Operation
• The performance may be different if the hardware revisions are different. Before you transfer the
user program, data, and parameter settings to the CPU Units with the different hardware revisions,
check them for proper execution and then use them for actual operation.
Motion Control
• Precautions on the Absolute Encoder Home Offset
The absolute encoder home offsets are retained in the CPU Unit as absolute encoder information.
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 Servo Drive with an absolute encoder was lost.
Backing Up Data
• For NX-series CPU Unit, the present values of variables are backed up by the backup operation.
However, we recommend that you execute it while the retained variables are not refreshed. If you
Precautions for Safe Use
12
NJ/NX-series Firmware Update Instruction with Memory Cards (P161)
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