Using Ethernet Communications - Omron K6PM-TH User Manual

7-3

Using EtherNet Communications

This section shows troubleshooting when using the EtherNet/IP or Modbus TCP.
 EtherNet/IP
Problems
EtherNet/IP com-
munications can not
be executed when
using BOOTP mode
EtherNet/IP com-
munications are not
possible.
A timeout occurred
in a tag data link.
 Modbus TCP
Problems
Modbus TCP com-
munications cannot
be performed when
using BOOTP mode
K6PM-TH Thermal Condition Monitoring Device User's Manual (H231)
Cause
NS LED is IP address has not
not lit been acquired from
the BOOTP server
NS LED The IP address of
blinking red the built-in Ether-
Net/IP port is also
used as the IP
address of another
node.
NS LED is An Ethernet link
not lit OFF was detected.
NS LED Communications
blinking red with the originator
device timed out.
Cause
NS LED is IP address has not
not lit been acquired from
the BOOTP server
7 Troubleshooting
Possible correction
Check the connection between BOOTP
server and the Main Units.
If you do not have a BOOTP server,
press the CH Key and the SEG/ALM
RST Key at the same time for at least
five seconds to initialize all settings of
the Main Unit.
Change the IP address setting to avoid
duplication.
Check the connection between the
switching hub and the Main Units to
see if the following items are normal.
• Whether the Ethernet cable is bro-
ken, loose, or disconnected
• Power state of the switching hub
• Communications settings of the
switching hub
Make sure the following items are nor-
mal on the communications route.
• Whether the Ethernet cable is bro-
ken, loose, or disconnected
• Power supply state and operation
state of the originator
• Power state of the switching hub
• State of noise
Possible correction
Check the connection between BOOTP
server and the Main Units.
If you do not have a BOOTP server,
press the CH Key and the SEG/ALM
RST Key at the same time for at least
five seconds to initialize all settings of
the Main Unit.
Reference
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Reference
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