137
Troubleshooting
Section 6-1
The memory table display
contents differ from the ini-
tial value set at the NT
Support Tool.
Since the memory table entry is allo-
cated to the host memory, the display
is updated in accordance with the
contents of the host memory.
When the contents of the memory table entry are set
as a fixed values, do not allocate the memory table
entry to the host memory.
Updating of numeric val-
ues and text is delayed.
Malfunction due to external noise
Carry out grounding work in accordance with the
conditions by referring to
2-2-3 Wiring the Ground
Wire
, page 21.
There are too many numeral/text dis-
plays on the displayed screen.
Reduce the number of numeral/text displays on the
screen for which updating is delayed.
The cycle time is extended due to
heavy processing at the host.
Shorten the host cycle time.
In an RS-422A/485 connection, there
is illegal branching or an erroneous
terminator setting.
Wire correctly by referring to
SECTION 2 Hardware
Settings and Connections
.
Some of the elements
arranged on a normal
screen are not displayed.
The quantity of read data exceeds the
stipulated restriction.
Check the maximum number of elements. Create the
screen data again and then transmit all of the screen
data in a batch to the NT11.
The total of the element coefficients
for the displayed screen is greater
than 1024.
The following System
Menu operations are not
possible.
- Establishing the Transmit
mode
- Displaying the memory
switch setting screens
- Screen data memory
check
- Displaying the initializa-
tion menu
Screen Memory Protect has been set
to Disabled because the PT power
supply was turned OFF during dele-
tion of screen data.
Do not turn the PT power OFF during deletion of
screen data.
Cannot input numeric val-
ues.
The upper/lower (max./min.) limit
check for numeric value input is in
effect.
Check the screen data’s upper/lower (max./min.) limit
check setting for numeric value input, and correct it if
necessary. Refer to
4-6 Numeral Setting
.
The display is dim.
The contrast setting is too low.
Increase the contrast with the contrast adjustment on
the back of the NT11.
Backlight defective, or its life has
expired.
Contact your OMRON service center. (The backlight
cannot be removed.)
The display is too faint.
The contrast setting is too high.
Reduce the contrast with the contrast adjustment on
the back of the NT11.
The digits in numeral dis-
play come out as
*
.
The number of digits of a numeric
value in a numeral memory table
entry exceeds the set number.
• Confirm the values of the PLC words allocated to
the numeral memory table entry.
• Allocate one PLC word to each numeral memory
table entry.
NT11 Symptoms
Cause
Remedy
Summary of Contents for NT11 - 01-2004
Page 1: ...USER S MANUAL Cat No V084 E1 01 NT11 Programmable Terminal ...
Page 2: ...NT11 Programmable Terminal User s Manual Produced January 2004 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 13: ...xiv Safety Precautions 3 ...
Page 27: ...14 Before Operating Section 1 6 ...
Page 71: ...58 Connecting a Printer Section 2 8 ...
Page 119: ...106 Daily Report Display History Printing Function Section 4 10 ...
Page 157: ...144 Inspection and Cleaning Section 6 3 ...
Page 162: ...149 Appendix B Dimensions Body NT11 SF121 B EV1 38 2 7 5 218 203 113 98 ...
Page 163: ...150 Dimensions Appendix B ...
Page 165: ...152 Transporting and Storing the NT11 Appendix C ...
Page 183: ...170 Revision History ...
Page 186: ...NT11 Programmable Terminal Cat No V084 E1 01 USER S MANUAL ...
