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Appendix B Troubleshooting CI873 Log
Entries
Connection Error
This is displayed as “I/O Connection Error” for the device in Unit Status of the
device. This is indicated as an error. The messages displayed in CI873 log files for
the Connected related errors with the device are shown in the Table 42. The position
of the device in the hardware tree for which the message is printed, is also printed in
the CI873 logs.
Table 42. Connection Errors
Sl
No
Message in CI873 Log Description
Applicability based on
device classification
1 Connection in use or
Duplicate Forward
Open
Requested connection is already
available in the slave device.
EtherNet/IP
2 Transport Class and
Trigger combination
not supported
Transport Class (Class 1 0r class 3)
and trigger (Cyclic,COS) used in the
connection request is not supported
by the device. Check the EDS file for
correctness.
EtherNet/IP
3 Connection ownership
conflict
Connection request sent is already
available in slave device which is
originated by some other master.
EtherNet/IP
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