Section 5 Troubleshooting and Maintenance 5-2 Error Messages
5-16
NS Series Programming Manual
5-2-6 Troubleshooting Errors during System Menu Operation
Message Cause Possible countermeasure
Error occurred while formatting
screen data range.
Hardware failure.
Contact your nearest OMRON representa-
tive.
Failed to save to a file. File system damaged.
Format the screen data area and transfer
the screen data again.
The address set at CH type se-
lection is not correct. Check the
address and input the correct
address again.
Allocated host: XXXX
Allocated address: XXXX
MRES = XXXX, SRES = XXXX.
Set address is incorrect.
Check whether or not an illegal address
has been set and set the correct address.
Time-out error occurs while
downloading by the following
case:
• Disconnection of the connect-
ing cable
• Stopped host
MRES = XXXX, SRES = XXXX.
NS5:
Time-out error occurs while
downloading Host
Allocated host: XXXX
Cable is disconnected.
PLC power supply is OFF.
Connect the cable correctly.
Turn ON the PLC power supply.
The address set at CH type
selection is not for writing.
Check the address and input the
correct address again.
Allocated host: XXXX
Allocated address: XXXX
MRES = XXXX, SRES = XXXX.
Host is in RUN mode.
Tried to write to a write
prohibited address.
Change to program or monitor mode.
Check the address and set the correct
address.
Other peripheral tool is access-
ing. Send commands again after
access right is released.
Allocated host: XXXX
Allocated address: XXXX
MRES = XXXX, SRES = XXXX.
CX-Programmer or other
programming device is
connected.
Disconnect the connected programming
device.
Communication error detected
while downloading by the
following case:
• Corrupted data by noise
• Transmit error by the host
MRES = XXXX, SRES = XXXX.
NS5:
Communication error detected
while downloading the data
Allocated host: XXXX
Data corrupted by noise.
Invalid host communications
command.
Check the cable connection and conduct a
continuity test. Exchange the cable if there
is a cable error. If necessary, rewire the
cable.
Registered host information and
communication setting are not
match. Check the communica-
tion setting.
Registered host selected but
not connected.
Change the communications settings
under the System Menu so that the
corresponding port is set.
Destination address is incorrect.
Check the host information.
The remote address where
the host is registered is
incorrect.
Connected to a different PLC
while online.
Check the host registration and, if neces-
sary, use CX-Designer to change the
address.
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