11
TROUBLESHOOTING
11.4 Error Codes
11.4.3 Error code list
11 - 34
9
PROGRAMMING
10
DEDICATED
INSTRUCTIONS
11
TROUBLESHOOTINGAPPENDICESINDEX
Table11.16 Error code list (Continued)
(Continued on next page)
Error code Error Name Error definition Corrective Action
Occurrence
1) 2) 3) 4) 5)
7370
H
(29552)
Automatic
communication
function stop request
error
The automatic communication stop
request (Y6, YE) was made with the
automatic communication function
stopped.
Prevent the automatic communication
stop request (Y6, YE) from being
issued with the automatic
communication function stopped.
7371
H
(29553)
Automatic
communication
parameter setting
request error
The automatic communication
parameter setting request/automatic
communication parameter start request
(Y4, YC) was made with the automatic
communication function active.
Stop the automatic communication
function before making the automatic
communication parameter setting
request/automatic communication
parameter start request (Y4, YC).
7372
H
(29554)
Switch change error
In the control data of the UINI
instruction, an out-of-range or invalid
value is set.
Review the control data of the UINI
instruction.
7373
H
(29555)
Automatic
communication
parameters set
during switch setting
change
Automatic communication parameters
were set during execution of the UINI
instruction.
Or, the UINI instruction was executed
while automatic communication
parameters were being set.
Prevent concurrent execution of the
UINI instruction and auto
communication parameter setting.
7374
H
(29556)
MODBUS device
assignment
parameters set
during switch setting
change
MODBUS device assignment
parameters were set during execution
of the UINI instruction.
Or, the UINI instruction was executed
while MODBUS device assignment
parameters were being set.
Prevent concurrent execution of the
UINI instruction and MODBUS
device assignment parameter setting.
7378
H
(29560)
Response
monitoring timer
timeout error
The response monitoring timer timed
out in the automatic communication
function.
In the case of broadcast, the broadcast
delay has expired before completion of
the request message transmission.
When broadcast was performed
beforehand, response is not possible
because the slave is currently
executing the processing requested by
the broadcast.
• Check if the target device is
operating normally.
• If an error has occurred in the target
device, remove the error.
• Confirm the line connections (cables,
wiring, etc.) with the target device.
• Check the processing time of the
target device. (Is the set value too
small? Does the timeout error occur
before response of the target device
or before completion of the request
message transmission?)
• Set a larger value.
• When the automatic communication
function and the MBRW or MBREQ
instruction are used on the same
channel, set appropriate automatic
communication parameters and
create a proper sequence program
so that the MBRW or MBREQ
instruction can be executed in the
right timing.(
Section 9.2.3)
• When broadcast delay was
performed beforehand, check if the
broadcast delay value is sufficient.
• If this error occurs when a request
message, for which no response is
expected, is sent to a slave by the
MBREQ instruction, this error may
be regarded as a normal completion.
(
Section 10.3 (6))
7379
H
(29561)
The response monitoring timer timed
out when using the dedicated
instruction.
In the case of broadcast, the broadcast
delay has expired before completion of
the request message transmission.
When broadcast was performed
beforehand, response is not possible
because the slave is currently
executing the processing requested by
the broadcast.
A request message, for which no
response is expected, was sent to a
slave by the MBREQ instruction.
(excluding the case of broadcast)
737B
H
(29563)
Request interval
timer timeout error
The time for issuing the next request
was reached before the current request
is completed.
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