6-2
Section
Responding to Displayed Error Messages
417
Error
Remedy
Probable cause
Other tool is accessing.
A Programming Device
connected to the PC is
performing an operation such
as online editing.
(when attempting to change
the operating mode or clear
forced status)
Try the operation again after disconnecting the
Programming Device.
Remove trouble execution
fails. (when clearing an error
from error log screen)
The cause of the PC error
has not been eliminated.
Eliminate the cause of the error that you are trying to
clear. For details, refer to the PC’s Operating Manual.
Connection failed.
(when starting the Device
Monitor function)
The Device Monitor function
was called when the PT was
not connected to a PC that
supports Device Monitor.
Check the model of the PC that is connected. (Refer to
2-17-1 Compatible Systems for a table of PCs that
support the Device Monitor function.)
Set Comm. Method to NT
Link (1:1 or 1:N)
(when the Device Monitor
menu is being displayed)
The communications protocol
set at the PT is not 1:1 NT
Link or 1:N NT Link.
Check the memory switches (fourth screen) and set the
connected PC’s serial port protocol to 1:1 NT Link or
1:N NT Link. Set the same protocol in the PC.
6-2-3 Errors Occurring on Screen Data Initialization and Transmission
The table below shows the errors that can occur when the PT data is initialized,
and during data setting and transmission, and their remedies.
Message
Cause
Remedy
[Flash Memory Error]
Flash Memory I/O Error.
If this happens frequently, Flash
Memory may be broken.
Press Reset Switch to restart.
There is a hardware fault, or the
flash memory (memory for
storing screen data) has reached
the end of its service life.
If the same message is displayed even after
clearing the screen data or transmitting screen
data several times, contact your OMRON
service center.
[Calendar Data Error]
Calendar Data is incorrect.
Set to the MAINTENANCE
MODE and set Calendar Data.
Hardware fault, or system
program error
Set the calendar clock again from the System
Menu. If the problem recurs, delete the program
in the System Installer mode, then re-install the
program. (Refer to Section 6 of the
Setup
Manual.)
If this does not solve the problem, contact your
OMRON service center.
[Tool Transmit Error]
∗∗∗∗
Error detected while
downloading by the following
case:
The connecting cable is
defective.
Check the cable connection and perform a
conductivity test. If there is a fault, replace the
cable. (Refer to the appendix
Making the Cable
for Connecting a PC in the Setup Manual.)
case:
S
faulty connecting cable.
S
corrupted data by noise.
Malfunction due to external noise
Carry out grounding work in accordance with the
conditions. (Refer to
Grounding in section 3 in
the
Setup Manual.)
[Tool Transmit Error]
Check Sum Error occurs while
downloading by the following
case:
S
corrupted data by noise.
Malfunction due to external noise
Carry out grounding work in accordance with the
conditions. (Refer to
Grounding in section 3 in
the
Setup Manual.)
[Tool Transmit Error]
Time-out Error occurs while
downloading by the following
case:
S
faulty connecting cable.
The connecting cable is
defective.
Check the cable connection and perform a
conductivity test. If there is a fault, replace the
cable.
[Tool Transmit Error]
Reception was failed by Buffer
Over Flow Error.
The receive buffer has
overflowed.
Retransmit the data from the Support Tool.
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Summary of Contents for NT21 Series
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