11 - 4 11 - 4
MELSEC-Q
11 TROUBLESHOOTING
No.
Symptom
Check Item
Corrective Action
Reference
Section
Check the automatic communication
stop request.
Restart the automatic communication
function.
Section 7.3
Section 5.2.1
8 Automatic
communication
operation status
(X6) turned off.
Check whether the basic parameters
were re-set while the automatic
communication function was active.
(The automatic communication is
stopped when the basic parameters are
re-set.)
Restart the automatic communication
function after completing basic
parameter re-setting.
Section 7.2
Section 7.3
Section 5.2.1
9 Automatic
communication
error status (X7)
turned on.
Check if the communication with the
target device is possible.
Check the Automatic communication
operation status storage area (0C20
H
to
0C23
H
) in the buffer memory and
identify the parameter number of the
error cause.
Take corrective actions according to the
error code currently stored in the
Automatic communication error code
storage area (0C28
H
to 0C67
H
) or the
exception code sent from the target
slave.
Section 11.3.1
10 COM. ERR. LED
status (X1B)
turned on.
Refer to "COM. ERR. LED turned on.".
This section
(1)-3
Check whether the slave function is
used or not?
When the slave function is not used, the
MODBUS
R
device assignment
parameter setting existence (XA) may
be off.
Set the MODBUS
R
device assignment
parameters from GX Configurator-MB or
from the sequence program.
Section 7.4
Section 9.1.3
Check if the MODBUS
R
device
assignment parameter setting has been
completed.
In the setting of intelligent function
module switch 2 (communication
condition setting) - b1: MODBUS
R
device assignment parameter starting
method, select "OFF: Start with the
default parameters".
Section 6.6
11 MODBUS
R
device
assignment
parameter setting
existence (XA)
does not turn on.
Check if the MODBUS
R
device
assignment parameter setting, error
completed (X9) is on.
Refer to "MODBUS
R
device assignment
parameter setting, error completed (X9)
turned on.".
This section
(2)-6
Содержание QJ71MT91
Страница 1: ......
Страница 2: ......
Страница 278: ...App 1 App 1 MELSEC Q APPENDICES APPENDICES Appendix 1 External Dimensions Unit mm in 27 4 1 08 90 3 54 98 3 86 APP ...
Страница 291: ......
Страница 292: ......