![background image](http://html.mh-extra.com/html/omron/nt21/nt21_setup-manual_744541190.webp)
7-2
Section
Responding to Displayed Error Messages
179
7-2-2 Errors Occurring during Operation and Their Remedies
The table below shows the errors that can occur during operation of the NT21
and their remedies.
Message
Cause
Remedy
[Address Setting Error]
Addressing Error exists in the
Screen.
Correct address setting by the
NT Support Tool.
The host side allocated words
and bits set with the NT Support
Tool are incorrect.
Set correct words and bits after checking the
area used at the host side by referring to PC
Memory Map in Appendix D of the Reference
Manual or the operation manual for the PC
being used.
[Memory Table No. Error]
Memory table entry number is
out of limit.
Correct the table entry number
by the NT Support Tool.
The memory table entry number
set with the NT Support Tool is
outside the range for the number
of entries in the memory table set
in the system memory.
Either increase the number of memory table
entries in the System settings under PT
Configuration at the NT Support Tool, or set the
memory table entry number again within the
established range. Then transmit all of the
screen data in a batch to the NT21.
[Programming Console Error]
Setting of Programming Console
Function is inadequate. It can be
caused by:
S
This PLC does not support Pro-
gramming Console Function.
The communication settings are
incorrect.
Set the communication method/communication
port as follows when using the Programming
Console function.
S
With C-series PLCs:1:1 NT Link
S
With CS/CJ-series PLCs:
1:N NT Link (standard or high-speed)
g
g
S
Protocol mismatch. Set the PLC
to NT Link.
S
“PROGRAMMING CONSOLE”
is connected to PLC.
The PC used does not support
the Programming Console
function.
Not all PCs support the Programming Console
function. Check the model of the PC you are
using. (6-12 Programming Console Function,
page 165)
is connected to PLC.
A Programming Console is
connected.
It is not possible to use a Programming Console
and the Programming Console function at the
same time. Disconnect the Programming
Console.
[Programming Consol Error]
Programming Console Function
does not RUN. It can be caused
The connecting cable is
defective.
Check the cable connection and perform a
conductivity test. If there is a fault, replace the
cable.
does not RUN. It can be caused
by:
S
Connecting cable is faulty.
S
“PROGRAMMING CONSOLE”
Malfunction due to external noise
Carry out grounding work in accordance with the
conditions by referring to 3-1-4 Grounding, page
18.
S
PROGRAMMING CONSOLE
is connected to PLC.
S
Protocol mismatch between the
PT and PLC. Set the PLC to NT
Link.
A Programming Console is
connected.
A Programming Console and the Programming
Console function can be used at the same time
in CS/CJ series PCs only. If another PC is being
used, disconnect the Programming Console.
Link.
The communication conditions at
the PC have been changed in
accordance with the NT21
Programming Console function.
Set the communication conditions at the PC to
match the conditions set in the System Menu.