Omron NX Series Hardware User Manual page 90

3 Configuration Units
Precautions for Safe Use
• Never turn OFF the power supply to the Controller when the BUSY indicator is flashing. While
the BUSY indicator is lit, the user program and settings in the CPU Unit are being backed up
in the built-in non-volatile memory. This data will not be backed up correctly if the power sup-
ply is turned OFF. Also, a major fault level Controller error will occur the next time you start
operation, and operation will stop.
• Do not turn OFF the power supply or remove the SD Memory Card while SD Memory Card
access is in progress (i.e., while the SD BUSY indicator flashes). Data may become corrupt-
ed, and the Controller will not operate correctly if it uses corrupted data. To remove the SD
Memory Card from the CPU Unit while the power supply is ON, press the SD Memory Card
power supply switch and wait for the SD BUSY indicator and SD PWR indicator to turn OFF
before you remove the SD Memory Card.
You can check the operation status of the CPU Unit with the CPU Unit status indicators (POWER,
RUN, and ERROR indicators).
Refer to the NJ/NX-series Troubleshooting Manual (Cat. No. W503) for the procedures to check the
operation status of the CPU Unit.
Precautions for Correct Use
For products with lot numbers that represent the date of or after March 20, 2019, the shape of
the light emitting part of each indicator has been changed from a square to a pentagon.
Before change
l Built-in EtherNet/IP (Port 1/Port 2) Status Indicators
These indicators show the operation status of the built-in EtherNet/IP port of the CPU Unit.
The indicator name and other information are the same for port 1 and port 2.
Indicator
NET RUN
NET ERR
3-10
After change
Color Status
Green Lit. Normal startup status.
Flashing Ethernet communications are in progress.
•
•
Not lit. You cannot perform Ethernet communications.
•
•
Red Lit. An error for which the user cannot recover operation occurred.
•
Flashing An error for which the user can recover operation occurred.
•
•
•
Not lit. There are no Ethernet communications errors.
•
Meaning
Tag data link connection establishment in progress.
IP address acquisition with BOOTP in progress.
The power supply is OFF or the CPU Unit was reset.
A MAC address error or communications Controller error occurred.
A MAC address error or communications Controller error occurred.
An error occurred in TCP/IP communications or CIP communications.
FTP server setting error, NTP server setting error, etc.
Tag data link setting error, tag data link verification error, etc.
The power supply is OFF or the CPU Unit was reset.
NX-series NX102 CPU Unit Hardware User's Manual (W593)