Description Cause Corrective action
Ethernet physical layer
link not established
The Ethernet cable used for
Ethernet communications is
broken or the specified cable is
not being used.
If the Ethernet cable is broken or if the specified
cable is not being used, replace the cable.
Disconnected connector on the
Ethernet cable used for Ether-
net communications, contact
failure, or part failure
Reconnect the connector and check to ensure it is
mated correctly
.
Power is not supplied to the
Ethernet switch connected to
the CPU Unit.
Supply power to the Ethernet switch.
Failure of device within Ether-
net network configuration
Replace the device.
Noise Check noise entry paths, and implement noise-re-
lated countermeasures as required.
CPU Unit failure Replace the CPU Unit.
Interrupted communica-
tions between Power
PMAC IDE and CPU Unit
Communications interruption,
due to disconnection and re-
connection of the Ethernet ca-
ble used for Ethernet communi-
cation between Power PMAC
IDE and the CPU Unit while
communication was being es-
tablished
If communications are interrupted between Power
PMAC IDE and the CPU Unit with Ethernet com-
munications established, communications cannot
be reestablished simply by rectifying the problem
that interrupted the communications. T
o reestab-
lish the communications, you need to
click
Communication Setupin Power PMAC IDE
and restart communications.
Communications interruption
due to power to Ethernet
switch between Power PMAC
IDE and CPU Unit being turned
OFF → ON while communica-
tions were being established
Communications interruption
due to power to CPU Unit be-
ing turned OFF → ON while
communications were being
established
Temporary communications in-
terruption due to noise
Check noise entry paths, and implement noise-re-
lated countermeasures as required. Then reestab-
lish communications between Power PMAC IDE
and the CPU Unit.
T
o reestablish the communications, you need to
restart Power PMAC IDE or reestablish the com-
munications by using Power PMAC IDE.
EtherNet/IP connection
not established
If the originator in use is an NJ/NX-series CPU Unit, you can use Network Configu-
rator to identify the cause and corrective action. Refer to the NJ/NX-series CPU Unit
Built-in EtherNet/IP Port User’
s Manual (Cat. No. W506), 16-2 Checking Status with
the Network Configurator for details. Refer to 6-5 EtherNet/IP Connection Status
Codes and Troubleshooting on page 6-20 for error codes detected by the CK3M.
6 Troubleshooting
6-7
CK3M-series Programmable Multi-Axis Controller User's Manual Hardware (O036)
6-3 Troubleshooting for Errors
6
6-3-2 Non-fatal Errors in the CPU Unit
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