14 Troubleshooting
14-6
NJ-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
* This bit is not used in the error status variables for the EtherNet/IP Function Module.
z Other System-defined Variables Related to Errors
For the EtherNet/IP Function Module, there are other system-defined variables that show error sta-
tus in addition to the error status variables. Refer to 3-1 System-defined Variables Related to the
Built-in EtherNet/IP Port for system-defined variables that are related to errors.
You can use the Network Configurator to check the communications status (e.g., tag data link connec-
tion status) for each device on the EtherNet/IP network. Refer to 14-3 Checking Status with the Network
Configurator
.
This section describes the errors that are related to the EtherNet/IP Function Module.
There are the following three sources of errors in the EtherNet/IP Function Module.
* Other Ethernet communications are not affected.
This section describes the operation of the EtherNet/IP Function Module for each event level.
8 to 13 Not used.
7 Major Fault Indicates if there is a major fault level
error.
TRUE Error
FALSE No error
6 Partial Fault Indicates if there is a partial fault level
error.
TRUE Error
FALSE No error
5 Minor Fault Indicates if there is a minor fault level
error.
TRUE Error
FALSE No error
4 Observation Indicates if there is an observation
level error.
TRUE Error
FALSE No error
0 to 3 Not used.
Checking Communications Status with the Network Configurator
14-1-2 Errors Related to the EtherNet/IP Function Module
Classifications
Classification Description
Communications port errors If an error is detected in overall EtherNet/IP communications, the corresponding
bit in the Communications Port Error status variable shows the error.
CIP communications errors If an error that is related to the tag data links or CIP message communications is
detected, the corresponding bit in the CIP Error Communications Error variable
shows the error.
TCP application errors If an error that is related to the FTP server, NTP, or SMNP client is detected, the
corresponding bit in the TCP Application Communications Error variable shows
the error.
Event Levels
Bit Name Description Value Meaning
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