14   Troubleshooting
14-20
NJ-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
Event name BOOTP Server Connection Error Event code 84020000 hex
Meaning Connection with the BOOTP server failed.
Source EtherNet/IP Function Module Source details Communications 
port
Detection 
timing
At BOOTP opera-
tion
Error attributes Level Partial fault Recovery Automatic 
recovery
Log category System
Effects User program Continues. Operation EtherNet/IP communications will not operate. Requests to 
the BOOTP server will continue until there is a response 
from the BOOTP server. Data refreshing with the PLC 
Function Module will continue. An IP address was not set 
for the EtherNet/IP port when it was supposed to be set 
from the BOOTP server.
Indicators EtherNet/IP NET RUN EtherNet/IP NET ERR EtherNet/IP LINK/ACT
OFF Flashes at 1-s intervals. ---
System-defined 
variables
Variable Data type Name
_EIP_BootpErr BOOL BOOTP Server Error
Cause and 
correction
Assumed cause Correction Prevention
Server is down. Check if the server at the remote con-
nection is operating normally and set 
it to operate normally if it is not.
Check to make sure that the server at 
the remote connection is operating 
normally.
An error occurred in the communica-
tions path.
Check the communications path to 
the server and take corrective mea-
sures if there are any problems.
None
The IP address acquired from 
BOOTP server is illegal.
Correct the IP address that was pro-
vided to this port by the BOOTP 
server so that it is within the range 
specified for an NJ-series Controller.
Correct the IP address that was pro-
vided to this port by the BOOTP 
server so that it is within the range 
specified for an NJ-series Controller.
Attached 
information
None
Precautions/
Remarks
None
Event name Identity Error Event code 14210000 hex
Meaning The CIP identity information in non-volatile memory was not read correctly.
Source EtherNet/IP Function Module Source details CIP Detection 
timing
At power ON or 
Controller reset
Error attributes Level Minor fault Recovery Cycle the power 
supply.
Log category System
Effects User program Continues. Operation EtherNet/IP communications will not operate.
Indicators EtherNet/IP NET RUN EtherNet/IP NET ERR EtherNet/IP LINK/ACT
--- Lights. ---
System-defined 
variables
Variable Data type Name
_EIP_IdentityErr BOOL Identify Information Error
Cause and 
correction
Assumed cause Correction Prevention
Non-volatile memory failure Replace the CPU Unit. None
Attached 
information
None
Precautions/
Remarks
None