Omron K6PM-TH, User Manual

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7 Troubleshooting
K6PM-TH Thermal Condition Monitoring Device User’s Manual (H231)
7-
3 Usin
g Eth
erNet
Com
m
u
n
icat
ion
s
7
7-3 Using EtherNet Communications
This section shows troubleshooting when using the EtherNet/IP or Modbus TCP.
 EtherNet/IP
 Modbus TCP
Problems Cause Possible correction Reference
EtherNet/IP com-
munications can not
be executed when
using BOOTP mode NS LED is
not lit IP address has not
been acquired from
the BOOTP server 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.
---
EtherNet/IP com-
munications are not
possible. NS LED
blinking red The IP address of
the built-in Ether-
Net/IP port is also
used as the IP
address of another
node. Change the IP address setting to avoid
duplication.
NS LED is
not lit An Ethernet link
OFF was detected. 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
A timeout occurred
in a tag data link. NS LED
blinking red Communications
with the originator
device timed out. 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
Problems Cause Possible correction Reference
Modbus TCP com-
munications cannot
be performed when
using BOOTP mode NS LED is
not lit IP address has not
been acquired from
the BOOTP server 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.
---