Mitsubishi Electric MELSEC iQ-RJ71C24-R4 - Page 476

474
27 TROUBLESHOOTING
27.4 Error Code List
7140H
*1
Request data
error
• The request exceeded the
limit of processing points
that are predetermined for
each command and
allowed for one
transmission.
• A word device was
designated in a bit unit
command.
• The requested range
exceeded the end device
number.
(CPU module's last device
number  Start device
number + Number of device
points in message sent from
the target device)
PRO • Check and correct the
transmission message from
the target device and restart
data communications.
• If no error is found in the
device range, clear the
programmable controller CPU
information and retry.

7141H System error • The operating system of
C24 detected some error.
Page 490 Corrective actions
for system error
7142H
*1
Device name
error
• Device that cannot be
specified by the
corresponding command
was designated.
PRO • Check and correct the
transmission message from
the target device and restart
data communications.
• If no error is found in the
device name, clear the
programmable controller CPU
information and retry.

7143H
*1
Device No. error • The start device number
is out of range.
PRO • Check and correct the
transmission message from
the target device and restart
data communications.

7144H
*1
Monitor
registration error
• Monitoring was requested
before the monitor
registration has been
performed.
PRO • Register the device to be
monitored before issuing a
monitor request.

7145H
*1
Monitor PC No.
error
• The registered PC No.
and PC No. in the monitor
request are different.
C/N • Check and correct the
transmission message from
the target device and restart
data communications.
• Perform the monitor
registration again.

7146H
*1
Monitor CPU
model error
• The registered CPU
model name and the CPU
monitor name in the
monitor request are
different.
C/N • Check and correct the
transmission message from
the target device and restart
data communications.
• Perform the monitor
registration again.

7147H
*1
Number of
monitor
registration point
exceeded error
• The number of monitor
registration points
exceeded the range.
PRO • Check and correct the
transmission message from
the target device and restart
data communications.

7148H
*1
Extended R block
No. error
• A nonexistent extension
file register block No. was
designated.
• A block No. being used as
an extension comment
area, sampling trace area,
or status latch area was
designated.
PRO • Check and correct the
designated block No. and
restart data communications.

Error code
(hexadecima
l)
Error Description Signal
name
Corrective action Protocol
MC Nonpr
ocedu
ral
Bidire
ctiona
l
Prede
fined