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TROUBLESHOOTING11
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11
MELSEC-F
11 TROUBLESHOOTING
This section explains the contents of the errors that may occur during communication
between the Ethernet module and an external device as well as the troubleshooting
procedures.
The following are methods for checking if there is an error on the Ethernet module
side and the contents of the error.
Use one of the following methods to check if there is an error and its content, then
take corrective actions.
(1) Check using the display LED on the front of the Ethernet module
(See Section 11.1.)
The display LED on/off status can be used to check if an error is occurring in the
Ethernet module.
(2) Check through FX Configurator-EN
FX Configurator-EN can be used to check various conditions of the Ethernet
module as well as the error code corresponding to the contents of the error
occurring and to perform tests.
(a) Ethernet diagnostics (See Subsection 11.2.2.)
1) PING test (See Subsection 5.4.1.)
2) COM. ERR off (See Subsection 11.1.2 and 11.2.1.)
(3) Check through GX Developer
(a) Buffer memory batch monitor
The error code can be checked by monitoring the buffer memory of the
Ethernet module.
(4) Check the contents of the error using the error code (See Section
11.4.)
The contents of the error can be checked using the error code confirmed on the
dedicated screen above or by monitoring the buffer memory by referring to
Section 11.4.
NOTE
If line errors and other errors occur when connecting devices of multiple
manufacturers, the users needs to isolate the malfunctioning parts using line
analyzers, etc.