Omron Sysmac NJ-series User Manual page 444

15 Troubleshooting
The flowchart for an NX1P2 CPU Unit is given below.
LINK/ACT lit?
Flashing
Lit
NET RUN lit?
Flashing
Lit
NET ERR lit?
Not lit
There are no communications errors in the built-in EtherNet/IP port.
15-6
Start
Ethernet communications are not possible.
You cannot check the error details.
Not lit
Not lit
Ethernet communications are
possible.
You can check error details
when you connect the Sysmac
Studio or an HMI via Ethernet.
Flashing
Lit
Lit
NET ERR lit?
Flashing
Lit
NET ERR lit?
Flashing
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
A link is not established with the
Ethernet switch.
Replace the Ethernet cable or the
Ethernet switch.
An error from which recovery is not
possible has occurred in Ethernet
communications. Replace the CPU Unit.
Ethernet communications are not possible
with the user IP address, but recovery is
possible.
Monitor the system-defined variables
by directly connecting the Sysmac Studio
to the EtherNet/IP port, and isolate the
cause of the error.
An error from which recovery is not
possible has occurred in CIP or
TCP/IP application communications.
Replace the CPU Unit.
Isolate the cause of the error and
check the functions that are affected.
An error for which recovery is possible
has occurred in one of the functions.
Monitor the system-defined variables
on the Sysmac Studio or an HMI to
isolate the cause of the error, and
take necessary measures.