Mitsubishi QJ71MT91 User Manual

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MELSEC-Q
11 TROUBLESHOOTING
(2) Troubleshooting of errors indicated by X signals
No. Symptom Check Item Corrective Action
Reference
Section
1 Module READY
(X0) turned off.
2 Watch dog timer
error (X1F) turned
on.
Refer to "RUN LED turned off.".
This section
(1)-1
3 Basic parameter
setting, error
completed (X2)
turned on.
Refer to the basic parameter error code
storage area (0C10
H) and confirm the
error code.
Take the corresponding corrective action
and retry.
Section 7.2
Section 11.3
Set the basic parameters from GX
Configurator-MB or from the sequence
program.
Section 7.2
Section 9.1.1
Check if basic parameter setting has
been completed.
In the setting of intelligent function
module switch 2 (communication
condition setting) - b0: Basic parameter
starting method, select "OFF: Start with
the default parameters".
Section 6.6
4 Basic parameter
setting existence
(X3) does not turn
on.
Refer to the basic parameter error code
storage area (0C10
H) and confirm the
error code.
Take the corresponding corrective action
and retry.
Section 7.4
Section 11.3
5 Automatic
communication
parameter setting,
error completed
(X5) turned on.
Refer to the automatic communication
parameter error code storage area
(0C11H) and confirm the error code, and
refer to the automatic communication
parameter setting result storage area
(0C12
H) and identify the parameter
number where the error occurred.
Take the corresponding corrective action
and retry.
Section 7.3
Section 11.3
6 MODBUS
R
device
assignment
parameter setting,
error completed
(X9) turned on.
Confirm the error code in the
MODBUS
R
device assignment
parameter error code storage area.
Take the corresponding corrective action
and retry.
Section 7.4
Section 11.3
Check if the automatic communication
function is active.
Set the automatic communication
parameters and activate it from GX
Configurator-MB or from the sequence
program.
Section 7.3
Section 9.1.2
Check if the automatic communication
parameter setting, error completed (X5)
is on.
Refer to "Automatic communication
parameter setting, error completed (X5)
turned on."
This section
(2)-5
Check if the INIT. LED is on. Refer to "INIT. LED does not turn on.". This section
(1)-4
7 Automatic
communication
operation status
(X6) does not turn
on.
Check if the basic parameter setting,
error completed (X2) is on.
Refer to "Basic parameter setting, error
completed (X2) turned on."
This section
(2)-3

Mitsubishi QJ71MT91 Specifications

General

Brand	Mitsubishi
Model	QJ71MT91
Category	Controller
Language	English