Mitsubishi QJ71MT91 User Manual

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MELSEC-Q
11 TROUBLESHOOTING
Occurrence Error
Code
Error Name Description Lit LED Corrective Action
1) 2) 3) 4) 5)
7331H
MODBUS
R
device
upper limit value
over error
The head MODBUS
R
device
number + assignment points
in the MODBUS
R
device
assignment parameter
exceeds the maximum
(65535) of the
MODBUS
R
device.
COM.ERR.
Review the setting of the head
MODBUS
R
device number and
assignment points.
7332H
MODBUS
R
device
assigned range
overlap error
MODBUS
R
device ranges set
with the MODBUS
R
device
assignment parameters are
overlapped.
COM.ERR.
Review the setting of the head
MODBUS
R
device number and
assignment points.
7333H
Buffer memory
assigned range
error
The assigned range of the
QJ71MT91 buffer memory
set with the MODBUS
R
device assignment
parameters exceeds the set
range of the user free area.
COM.ERR.
Review the setting of the head
device number and assignment
points.
7334H
Device upper limit
value over error
The head device number +
assignment points in the
MODBUS
R
device
assignment parameter
exceeds the maximum
(65535) of the CPU device.
COM.ERR.
Review the setting of the head
device number and assignment
points.
7340H
Target
MODBUS
R
devic
e type
specification error
The setting of the target
MODBUS
R
device type
specification in the automatic
communication parameter is
incorrect.
COM.ERR.
Review the setting of the target
MODBUS
R
device type
specification.
7343H
The setting of the response
monitoring timer in the
automatic communication
parameter is outside the
setting range.
COM.ERR.
Review the setting of the
response monitoring timer so
that it falls within the setting
range.
7344H
Response
monitoring timer
setting error
The setting of the response
monitoring timer in the
automatic communication
parameter is less than the
setting of the split reception
monitoring timer value.
COM.ERR.
Make the response monitoring
timer greater than the split
reception monitoring timer
value.
7345H
Buffer memory
address overlap
error
The setting ranges of the
buffer memory in the
automatic communication
parameter overlap between
multiple parameters.
COM.ERR.
Correct the overlapping buffer
memory settings.
(Continued on next page)

Mitsubishi QJ71MT91 Specifications

General

Brand	Mitsubishi
Model	QJ71MT91
Category	Controller
Language	English