Omron Sysmac NJ-series

15-5
15 Troubleshooting
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
15-1 Overview of Errors
15
15-1-1 How to Check for Errors
 Flowchart to Check Error Status on EtherNet/IP Function Module with
Indicators
The flowchart for an NX701 CPU Unit is given below. To differentiate between the two communica-
tions ports in the flowchart, the port for which to isolate the error is called the relevant port.
Indicators Indicated status
EtherNet/IP NET ERR EtherNet/IP Port Status
• Lit: An error for which normal status cannot be recovered through user actions (i.e.,
errors for which you must replace the CPU Unit or contact your OMRON representa-
tive) has occurred.
• Flashing: An error for which normal status can be recovered through user actions
has occurred.
• Not lit: There is no minor fault level or higher-level error.
LINK/ACT lit
for relevant port?
NET ERR lit
for relevant port?
NET ERR lit
for relevant port?
NET ERR lit
for relevant port?
NET RUN lit
for relevant port?
START
Not lit. Not lit.
Not lit.
NET ERR lit
for relevant port?
There are no communications errors in the
relevant port for built-in EtherNet/IP.
*1. You can connect the Sysmac Studio or an HMI to the other port to confirm error details only when Ethernet communications are possible for
the other port.
If a link is not established with the
Ethernet switch connected to the
relevant port, replace the Ethernet
cable or the Ethernet switch.
An error from which recovery is not
possible has occurred in Ethernet
communications on the relevant port.
Replace the CPU Unit to recover
normal operation for the relevant port.
Ethernet communications are not possible
for the relevant port, but recovery is
possible. Connect the Sysmac Studio via
the other port
*1
or via USB and read the
system-defined variable status to find the
cause of the error.
An error from which recovery is not
possible has occurred in CIP or TCP/IP
application communications for the
relevant port. Replace the CPU Unit to
recover normal operation for the relevant
port. 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 of
the relevant port. Use the Sysmac
Studio or an HMI to read the
system-defined variable status to
isolate the cause of the error and
correct it.
Lit.
Lit.Lit.
Flashing
Flashing
Flashing
Lit.
Flashing
Lit.
Flashing
Ethernet communications are possible.
Not lit.
Ethernet communications are not possible.
You can check error details when you connect
the Sysmac Studio or an HMI via Ethernet to
the other port
*1
, or connect the Sysmac Studio
to the USB port.
You can check error details with
an Ethernet connection for the
Sysmac Studio or an HMI to the
relevant port.