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MELSEC-Q
11 TROUBLESHOOTING
Occurrence
Error
Code
Error Name
Description
Lit LED
Corrective Action
1) 2) 3) 4) 5)
730B
H
Parameter
starting
method error
After power-on with parameters
preset by GX Configurator-MB,
before Basic parameter setting
existence (X3) turns on,
parameter settings were done
by any of the following:
• Basic parameter setting
request (Y1)
• Automatic communication
parameter setting request
/automatic communication
start request (Y4)
• MODBUS
R
device
assignment parameter setting
request (Y8)
COM.ERR.
When using parameters set by
GX Configurator-MB, do not make
parameter settings by Y-signals
before Basic parameter setting
existence (X3) turns on after
power-up.
O
7310
H
Monitoring
timer setting
error
Any of the monitoring timer
setting in the basic parameter
is incorrect.
COM.ERR.
Review the monitoring timer
setting.
7311
H
Preferred node
specification
setting error
The setting of the preferred
node specification in the basic
parameter is incorrect.
COM.ERR.
Review the setting of the
preferred node specification.
7312
H
Subnet mask
pattern setting
error
The setting of the subnet mask
pattern in the basic parameter
is incorrect.
COM.ERR.
Review the setting of the subnet
mask pattern.
7313
H
Default router
IP address
setting error
The setting of the default router
IP address in the basic
parameter is incorrect.
COM.ERR.
Review the setting of the default
router IP address.
7314
H
Subnet
address setting
error
The setting of the subnet
address in the basic parameter
is incorrect.
COM.ERR.
Review the setting of the subnet
address.
7315
H
Router IP
address setting
error
• The setting of the router IP
address in the basic
parameter is incorrect.
• The net ID of the local station
differs from the net ID of the
router IP address.
COM.ERR.
Review the setting of the router IP
address.
7316
H
Number of
routers setting
error
The setting of the number of
routers set in the basic
parameter is incorrect.
COM.ERR.
Review the setting of the number
of routers set.
7317
H
KeepAlive
setting error
The KeepAlive-related setting
in the basic parameter is
incorrect.
COM.ERR.
Review the KeepAlive-related
setting.
7318
H
Number of
TCP
connections for
GX Developer
connection
setting error
The setting of the number of
TCP connections for GX
Developer connection in the
basic parameter is incorrect.
COM.ERR.
Review the setting of the number
of TCP connections for GX
Developer connection.
7319
H
Local slave
station port No.
error
The setting of the local slave
station port No. in the basic
parameter is incorrect.
COM.ERR.
Review the setting of the local
slave station port No.
(Continued on next page)