Omron NT31 User Manual (English)

Other manuals for Omron NT31

Questions and Answers:

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dominicwellsSep 12, 2025
Why " " or " " is displayed in the numeral display or numeral input field on Omron Touch terminals?
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  Courtney SalazarSep 12, 2025
  If you see " " or " " displayed in the numeral display or numeral input field of your Omron Touch terminal, it means the numeric value in the numeral memory table exceeds the number of display digits. Check the values of the PLC words allocated to the numeral memory table entry. If the numeral display or numeral input field has 4 digits or less, allocate only one word to each numeral memory table entry.
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Lisa MillsSep 12, 2025
Why the digits in numeral display come out as on Omron NT31 Touch terminals?
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  joseph72Sep 12, 2025
  If the digits in the numeral display of your Omron Touch terminal appear as ' ', it indicates that the number of digits of a numeric value in a numeral memory table exceeds the set number. Confirm the values of the PLC words allocated to the numeral memory table and allocate one PLC word to each numeral memory table.
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Juan ButlerAug 27, 2025
Why is the Device Monitor function not working on my Omron Touch terminal?
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  Christine GarciaAug 27, 2025
  The Device Monitor function might not be working due to incorrect communications settings, the PLC not supporting the function, or the system program installed in the PT being for a PLC maker other than OMRON. Set the communications method as follows when using the Device Monitor function. With C-series PLCs: 1:1 NT Link or 1:N NT Link With CS/CJ-series PLCs: 1:N NT Link (standard or high-speed). Check the model of PLC you are using. Install a system program that supports the Device Monitor function.
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Christopher StewartAug 29, 2025
Why is the window screen not opening on my Omron Touch terminal?
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  stephanie09Aug 29, 2025
  If the window screen does not open on your Omron Touch terminal, bit 6 of the PT status control area (PT window opening) might be set to 1 (ON). Set bit 6 to 0 (OFF).
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craigrobinsonAug 29, 2025
Why can't I input numeric values or character strings on my Omron Touch terminal?
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  Steven MartinezAug 29, 2025
  If you cannot input numeric values/character strings on your Omron Touch terminal, bit 5 of the PT status control area (numeral/character string input) might be set to 1 (ON), or the interlock function is set for the input field and the controlling interlock bit is OFF. Set bit 5 to 0 (OFF). Inputs are prohibited in input fields when the corresponding interlock bit is OFF. Check the status of the corresponding interlock bit and turn it ON.
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Russell LeeAug 29, 2025
Why can't I input numeric values on my Omron Touch terminal?
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  lrussellAug 29, 2025
  If you cannot input numeric values on your Omron Touch terminal, the upper/lower (max./min.) limit check for numeric value input might be in effect. Check the screen data’s upper/lower (max./min.) limit check setting for numeric value input, and correct it if necessary.
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Nathan HowardAug 29, 2025
How to enable System Menu on Omron Touch terminal?
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  golsonAug 29, 2025
  If the System Menu cannot be called up on your Omron Touch terminal, Display System Menu under Change System Settings in the System Installer mode might be set to Disabled. In the System Installer mode, set Display System Menu to Enabled.
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Donald MendezAug 28, 2025
Why are some elements not displayed on my Omron Touch terminal screen?
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  wernerrhondaAug 28, 2025
  Some elements might not be displayed on your Omron Touch terminal screen because 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 NT31/NT31C.
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Renee BradshawAug 28, 2025
What to do if the memory table display contents differ from the initial value set at the Support Tool for Omron Touch terminal?
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  Heather TapiaAug 28, 2025
  The memory table display contents may differ from the initial value set at the Support Tool because the memory table is allocated to the host memory, the battery voltage has dropped and the data in the memory table has been destroyed, ON is set for the resume function, or the numeral memory table is specified as the destination for a mathematical table’s results. When the contents of the memory table are set as a fixed value, do not allocate the memory table to the host. Replace the battery and execute memory table initialization. Execute memory table initialization. If the resume function does not need to be used, use the NT31/NT31C with the resume function OFF. Specify another numeral memory table or a word in the host.
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Benjamin SpenceAug 28, 2025
Why is the numeric values and text updating delayed on my Omron Touch terminal?
- C
  Charles ColeAug 28, 2025
  If updating of numeric values and text is delayed on your Omron Touch terminal, it could be due to malfunction caused by external noise, too many numeral/text displays on the displayed screen, extended cycle time due to heavy processing at the host, or illegal branching or an erroneous terminator setting in an RS-422A/485 connection. Carry out grounding work. Reduce the number of numeral/text displays on the screen for which updating is delayed. Shorten the host cycle time. Wire correctly.

Omron NT31 Specifications

General

Display Type	STN LCD
Touch Panel	Analog resistive
Communication Interface	RS-232C, RS-422/485
Power Supply	24 VDC
Operating Temperature	0 to 50 °C
Storage Temperature	-20 to 60 °C
Display Size	5.7 inch
Resolution	320 x 240 pixels
CPU	32-bit RISC
Humidity	10 to 90% RH (non-condensing)
Shock Resistance	15 G for 11 ms
Protection class	IP65 (front panel)