Omron NJ501-1300 - Page 328

14 Troubleshooting
14-4
NJ-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
z EtherNet/IP Function Module Error Status
If the EtherNet/IP NET ERR indicator is also lit in addition to the PWR, RUN, and ERROR indicators,
then an error in the minor fault level or a higher level has occurred in the EtherNet/IP Function Mod-
ule. The indicator lets you check the status given in the following table.
z Flowchart to Check Error Status on EtherNet/IP Function Module with
Indicators
When an error occurs, you can connect the Sysmac Studio online to the Controller to check current
Controller errors and the log of past Controller errors. You can also check the cause of the error and
corrections.
Indicators Indicated status
EtherNet/IP NET ERR EtherNet/IP Function Module 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 rep-
resentative) 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.
Checking with the Troubleshooting Function of Sysmac Studio
LIN/ACT lit?
NET ERR not lit?
NET ERR not lit?
NET ERR not lit?
NET RUN lit?
Start
Not lit.
Lit.
NET ERR not lit?
There are no communications errors in the built-in
EtherNet/IP port.
Lit.
Lit.Lit.
Lit.
Flashing.
Ethernet communications are not possible.
A USB connection is required to check the
specific cause.
Not lit.
Not lit.
Not lit.
Flashing.
Flashing.
Flashing.
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.
Use the Sysmac Studio or an
NS-series PT to read the system-
defined variable status to isolate the
cause of the error and correct it.
Ethernet communications are
possible.
You can check error details
with an Ethernet connection
for the Sysmac Studio or an
NS-series PT.
Ethernet communications are not
possible, but recovery is possible.
Connect the Sysmac Studio 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 Ethernet
communications. Replace the CPU
Unit.
If a link is not established with the
Ethernet switch, replace the
Ethernet cable or the Ethernet
switch.