Omron CJ1W-EIP21 Operation Manuals page 335

Indicator
7-seg-
MS NS
ment*
Errors Related to Memory Access
--- --- E3
Errors Related to the Network
--- --- E3
* The 7-segment display alternates between the node address and error code.
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Error Cause
Server Connec- An error occurred in
tion Error communications with
the DNS server.
Server Connec- An error occurred
tion Error with the BOOTP
server.
1. There was no
response from
the BOOTP
server.
2. The BOOTP
server attempted
to set an invalid
IP address in the
EtherNet/IP Unit.
13 Troubleshooting
Error log
Unit operation
(hex)
*_DNSSvrErr (DNS 03C4
Server Error) will change
Details:
to TRUE.
00xx
Case 1: 03C4
The Unit will continue
Details:
sending requests to the
06xx
BOOTP server until there
is a response. In the
meantime, the Unit will be
offline and unable to com-
municate. Errors will be
returned to all communi-
cations requests. Data
exchanges (refreshing)
will continue with the
CPU Unit.
Case 2:
The Unit will operate with
the default IP address
(192.168.250.1.node_
address).
*_UnitErr (Unit Error
Occurred), *_NetErr (Net-
work Error Occurred),
and *_BootpSvrErr
(BOOTP Server Error)
will change to TRUE.
Countermeasure
Perform one of the
following:
• Correct the DNS
server settings.
• Check the commu-
nications path (Eth-
erNet/IP Unit, cable
connections, hubs,
routers, and serv-
ers) and correct
any problems.
Perform one of the
following:
• Correct the BOOTP
server settings.
• Check the commu-
nications path (Eth-
erNet/IP Unit,
cable connections,
hubs, routers, and
servers) and cor-
13
rect any problems.
13-17