11
 TROUBLESHOOTING
11.4 Error Codes
11.4.3 Error code list
11 - 32
9
PROGRAMMING
10
DEDICATED 
INSTRUCTIONS
11
TROUBLESHOOTINGAPPENDICESINDEX
(Continued on next page)
Table11.16 Error code list (Continued)
(Continued on next page)
Error Code Error Name Description Corrective Action
Occurrence
1) 2) 3) 4) 5)
7340
H
(29504)
Target MODBUS  
device type 
specification error
The set value of the target 
MODBUS  device type specification 
in the automatic communication 
parameter is incorrect.
Review the target MODBUS  device 
type specification value.
7342
H
(29506)
Request interval 
timer value setting 
error
The set value of the request interval 
timer in the automatic communication 
parameter is incorrect.
Review the request interval timer value.
7343
H
(29507)
Response 
monitoring timer 
setting error
The set value of the response 
monitoring timer in the automatic 
communication parameter is outside 
the allowable range.
Correct the response monitoring timer 
value so that it falls within the allowable 
range.
7345
H
(29509)
Buffer memory 
address overlap 
error
The buffer memory setting ranges 
overlap between several automatic 
communication parameters.
Review the overlapping buffer memory 
settings and correct them.
7346
H
(29510)
Buffer memory 
address range error
The buffer memory setting range in the 
automatic communication parameter is 
outside the range for the automatic 
communication function buffer input/
output area.
Correct the invalid buffer memory 
setting.
7347
H
(29511)
Automatic 
communication 
setting range error
Other than 0 and 1 is set in the 
automatic communication parameter 
setting existence.
Review the setting of the automatic 
communication parameter setting 
existence.
7348
H
(29512)
MODBUS  device 
number setting 
range error
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).
Review the setting range of the 
MODBUS  device.
7349
H
(29513)
MODBUS  device 
points setting error
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.
Review the setting range of the 
MODBUS  device.
734A
H
(29514)
Target station 
number setting error
The target station number set as an 
automatic communication parameter or 
in dedicated instruction's control data is 
incorrect.
Review the target station number.
734C
H
(29516)
Response 
monitoring timer 
setting error
The set value of the response 
monitoring timer in the dedicated 
instruction's control data is outside the 
allowable range.
Correct the response monitoring timer 
setting so that it falls within the 
allowable range.
734E
H
(29518)
Write data storage 
size setting error
The set value of the write data storage 
size in the dedicated instruction's 
control data is incorrect.
Review the write data storage size 
value.
734F
H
(29519)
Request message 
size setting error
The request message size specified as 
an argument ((S2)+0) of the MBREQ 
instruction is incorrect.
Review the request message size 
value.