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11
TROUBLESHOOTING
No.
Symptom
1 Module READY
(X0) turned off.
2 Watch dog timer
error (X1F) turned
on.
3 Basic parameter
setting, error
completed (X2)
turned on.
4 Basic parameter
setting existence
(X3) does not turn
on.
5 Automatic
communication
parameter setting,
error completed
(X5) turned on.
6 MODBUS device
assignment
parameter setting,
error completed
(X9) turned on.
7 Automatic
communication
operation status
(X6) does not turn
on.
11 - 3
(2) Troubleshooting of errors indicated by X signals
Check Item
Refer to "RUN LED turned off.".
Refer to the basic parameter error code
storage area (0C10
) and confirm the
H
error code.
Check if basic parameter setting has
been completed.
Refer to the basic parameter error code
storage area (0C10
) and confirm the
H
error code.
Refer to the automatic communication
parameter error code storage area
(0C11
) and confirm the error code, and
H
refer to the automatic communication
parameter setting result storage area
(0C12
) and identify the parameter
H
number where the error occurred.
Confirm the error code in the MODBUS
device assignment parameter error code
storage area.
Check if the automatic communication
function is active.
Check if the automatic communication
parameter setting, error completed (X5)
is on.
Check if the INIT. LED is on.
Check if the basic parameter setting,
error completed (X2) is on.
Corrective Action
Take the corresponding corrective action
and retry.
Set the basic parameters from GX
Configurator-MB or from the sequence
program.
In the setting of intelligent function
module switch 2 (communication
condition setting) - b0: Basic parameter
starting method, select "OFF: Start with
the default parameters".
Take the corresponding corrective action
and retry.
Take the corresponding corrective action
and retry.
Take the corresponding corrective action
and retry.
Set the automatic communication
parameters and activate it from GX
Configurator-MB or from the sequence
program.
Refer to "Automatic communication
parameter setting, error completed (X5)
turned on."
Refer to "INIT. LED does not turn on.".
Refer to "Basic parameter setting, error
completed (X2) turned on."
MELSEC-Q
Reference
Section
This section
(1)-1
Section 7.2
Section 11.3
Section 7.2
Section 9.1.1
Section 6.6
Section 7.4
Section 11.3
Section 7.3
Section 11.3
Section 7.4
Section 11.3
Section 7.3
Section 9.1.2
This section
(2)-5
This section
(1)-4
This section
(2)-3
11 - 3
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