Omron NS10-TV Series Programming Manual page 611

Section 5 Troubleshooting and Maintenance
NS Series Programming Manual
Symptoms
Screen is empty.
No response from
the touch panel.
Display is dark.
Cannot open
device monitor
function.
Slow display
refresh.
Slow screen
switching.
Errors During Object Operation
Symptoms
Slow numeral or
string refresh.
Cause
Waiting for system
startup.
Screen saver operating.
Backlight is OFF.
Backlight failure.
Touch panel malfunction-
ing due to external noise.
Touch panel malfunction.
Backlight defective or
service life over.
Incorrect communications
settings.
Not device monitor func-
tion PLC.
Frequent opening/closing
of screens and pop-up
screens or frequent
switching of frames.
Message communications
interval is too long.
Unable to communicate
with host.
Cause
Communications unstable
due to external noise.
Too many numeral
display and input or string
display and input objects
on the current screen.
Host processing slow,
increasing cycle time.
Possible countermeasure
This is not an error. The screen will be empty if the wait time
has been exceeded.
This is not an error. Touch the screen to display the screen
data.
Screen saver is started up. Please turn OFF the screen
saver.
Replace the backlight. Contact your nearest OMRON
representative.
Wire the ground wire to suit the conditions.
Test the touch panel by using Hardware Check under the
System Menu. Contact your nearest OMRON representative
if there is an error.
Replace the backlight. Contact your nearest OMRON
representative.
Make the following communications settings to use the device
monitor function.
For C-series PLCs: 1:1 NT Link or 1:N NT Link
For CS/CJ-series PLCs: 1:N NT Link (standard or high
speed)
The PLCs that can be used with the device monitor function
are limited. Check the model of the PLC being used.
(Refer to 6-8-4 Device Monitor in the NS Series Setup
Manual.)
If screens or frames are switched or pop-up screens are
opened and closed too frequently, the display may update
slowly and communications may be delayed. Adjust the
interval between screen switches to prevent system overload.
Select PT – Communications Setting in the CX-Designer,
click Comm-All, and set a shorter interval in the Intervals of
Message-Comm. Field. (Refer to Making Communications
Settings in the CX-Designer Online Help.)
When a communications error is displayed, refer to 5-2-7
Communications Errors and Countermeasures.
Communications errors will not be displayed when commu-
nications are set to recover automatically (Comm. Auto-return
set to ON). In this case, verify that the PT can communicate
with the host by performing a communications test from the
system menu. If two or more hosts are registered, test com-
munications with all of the hosts.
Possible countermeasure
Reset the power supply and wire the ground wire to suit the
conditions. (Refer to 3-1 Installing the PT in the NS Series
Setup Manual (Cat. No. V083).)
Reduce the number of numeral display and input objects or
string display and input objects on the screen with the slow
refresh.
Shorten the host cycle time.
5-4
5-1 Errors