Mitsubishi QJ71MB91 User Manual page 337

11
TROUBLESHOOTING
Error Code Error Name
Target MODBUS
7340
H
device type
(29504)
specification error
Request interval
7342
H
timer value setting
(29506)
error
Response
7343
H
monitoring timer
(29507)
setting error
Buffer memory
7345
H
address overlap
(29509)
error
7346
Buffer memory
H
(29510) address range error
Automatic
7347
H
communication
(29511)
setting range error
MODBUS device
7348
H
number setting
(29512)
range error
7349
H MODBUS device
(29513)
points setting error
734A Target station
H
number setting error
(29514)
Response
734C
H
monitoring timer
(29516)
setting error
734E
Write data storage
H
(29518) size setting error
734F
Request message
H
(29519) size setting error
Table11.16 Error code list (Continued)
Description
The set value of the target
MODBUS device type specification
in the automatic communication
parameter is incorrect.
The set value of the request interval
timer in the automatic communication
parameter is incorrect.
The set value of the response
monitoring timer in the automatic
communication parameter is outside
the allowable range.
The buffer memory setting ranges
overlap between several automatic
communication parameters.
The buffer memory setting range in the
automatic communication parameter is
outside the range for the automatic
communication function buffer input/
output area.
Other than 0 and 1 is set in the
automatic communication parameter
setting existence.
The MODBUS device range for the
read/write target set in the automatic
communication parameter or dedicated
instruction's control data exceeds the
maximum value (65536).
The MODBUS device range of the
read/write target set as an automatic
communication parameter or in
dedicated instruction's control data
exceeds the allowable range.
The target station number set as an
automatic communication parameter or
in dedicated instruction's control data is
incorrect.
The set value of the response
monitoring timer in the dedicated
instruction's control data is outside the
allowable range.
The set value of the write data storage
size in the dedicated instruction's
control data is incorrect.
The request message size specified as
an argument ((S2)+0) of the MBREQ
instruction is incorrect.
Corrective Action
Review the target MODBUS device
type specification value.
Review the request interval timer value.
Correct the response monitoring timer
value so that it falls within the allowable
range.
Review the overlapping buffer memory
settings and correct them.
Correct the invalid buffer memory
setting.
Review the setting of the automatic
communication parameter setting
existence.
Review the setting range of the
MODBUS device.
Review the setting range of the
MODBUS device.
Review the target station number.
Correct the response monitoring timer
setting so that it falls within the
allowable range.
Review the write data storage size
value.
Review the request message size
value.
11.4 Error Codes
11.4.3 Error code list
(Continued on next page)
Occurrence
1) 2) 3) 4) 5)
(Continued on next page)
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