Mitsubishi Electric QJ71MB91 User Manual page 339

11
TROUBLESHOOTING
Error code Error Name
Automatic
7350 communication
H
function start
(29520)
interruption
7353 Operation mode
H
(29523) error
7355
H
Channel No. error
(29525)
7360
Exception message
H
(29536) reception
7361
H
Byte count error
(29537)
7362 Reference number
H
error
(29538)
7365
Station No.
H
mismatch error
(29541)
7366
Function code
H
(29542) mismatch error
Response message
7367
H
contents mismatch
(29543)
error
Table11.16 Error code list (Continued)
Error definition
Failed to activate the automatic
communication function because the
GX Configurator-MB parameters were
being entered at power-on.
Any slave function was attempted
during master operation.
Or, any master function was attempted
during slave operation.
The channel No. specification is wrong.
When the automatic communication
function or dedicated instruction was
used, the target slave device returned
an exception code in reply to the
request message sent by the
QJ71MB91.
In the automatic communication
function or dedicated instruction, the
number of bytes in the received
response message is too small or
large.
The reference number value in the
response message received by the
dedicated instruction is incorrect.
In the automatic communication
function or dedicated instruction, the
station number in the received
response message does not match the
one in the corresponding request
message.
In the automatic communication
function or dedicated instruction, the
function code in the received response
message does not match the one in the
corresponding request message.
In the automatic communication or
dedicated instruction, the contents of
the received response message are
not consistent with those of the
corresponding request message.
(FC: 15, FC: 16, FC: 21)
Corrective Action
• Wait for the automatic
communication parameters to be
activated by GX Configurator-MB,
and start the automatic
communication function after
stopping automatic communication.
• Wait for MODBUS device
assignment parameter setting
existence (XA) to turn ON, and start
the automatic communication
function.
• Retry after a little while.
Check the mode or the operation.
Review the channel No. specification.
Refer to the exception code returned
from the target slave device, and solve
the problem.
On the target slave device, check if the
contents of the returned response
message are correct or not.
11.4 Error Codes
11.4.3 Error code list
Occurrence
1) 2) 3) 4) 5)
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