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Omron NT31 - User Manual

Omron NT31
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Cat.No. V043–E1–2
Programmable Terminal
NT31/31C
OPERATION MANUAL

Table of Contents

Other manuals for Omron NT31

Questions and Answers

  • A
    albert05Sep 23, 2025
    What does '[Memory Switch Corrupted]' mean on Omron NT31 Touch terminals and how can I solve it?
    • R
      rodriguezmelindaSep 23, 2025
      The '[Memory Switch Corrupted]' message on your Omron Touch terminals indicates that the memory switches have been initialized due to discovery of an error in the memory switch settings. Set the memory switches again using the System Menu and the “System” settings under “PT Configuration” at the Support Tool.
  • J
    Juan ButlerAug 27, 2025
    Why is the Device Monitor function not working on my Omron Touch terminal?
    • C
      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.
  • J
    jfarmerAug 27, 2025
    What causes the buzzer to sound and the RUN LED to be OFF on Omron Touch terminal?
    • C
      Christy TurnerAug 27, 2025
      If the buzzer has sounded and the RUN LED is OFF on your Omron Touch terminal, it could be due to malfunction caused by external noise or the NT31/NT31 has developed trouble. Carry out grounding work or contact your OMRON service center.
  • J
    Jasmine SanchezSep 2, 2025
    How to resolve '[Memory Switch Corrupted]' error on Omron Touch terminal?
    • P
      Philip SmithSep 2, 2025
      The '[Memory Switch Corrupted] Because Memory Switch setting was last' error appears because the memory switches have been initialized due to discovery of an error in the memory switch settings. Set the memory switches again using the System Menu and the System settings under PT Configuration at the Support Tool. If the problem recurs, contact your OMRON service center.
  • T
    Terri LaneSep 4, 2025
    How to fix Omron Touch terminals when the power LED fails to come ON?
    • C
      Courtney CainSep 4, 2025
      If the power LED on your Omron Touch terminal doesn't light up, first ensure the device is correctly connected to a power source. If the connection is correct, but the LED still doesn't turn on, it's possible the power supply fuse has blown, in this case you should contact your OMRON service center.
  • B
    Benjamin NicholsonSep 6, 2025
    Why the graph display does not change on Omron NT31 Touch terminals?
    • J
      Jeremy WardSep 6, 2025
      If the graph display on your Omron Touch terminal isn't changing, one of the percentage display settings — ?100%, 0%, or 100% — might be incorrect. Ensure these values are set in the following relationship: ?100% value < 0% value < 100% value.
  • S
    sara55Sep 9, 2025
    Why cannot switch screens with touch switches on Omron NT31 Touch terminals?
    • M
      Michael FitzpatrickSep 9, 2025
      If you cannot switch screens with touch switches on your Omron Touch terminal, it might be because bit 4 of the PT status control area (PT screen switching) is set to 1 (ON). Set bit 4 to 0 (OFF).
  • R
    rhallSep 13, 2025
    What does '[With memory switch setting screen] Invalid Comm. Method' mean on Omron NT31 Touch terminals?
    • C
      Caroline PayneSep 14, 2025
      If your Omron Touch terminal displays the message '[With memory switch setting screen] Invalid Comm. Method', it indicates that protocol settings for serial port A and serial port B are mismatched. Refer to Possible Combinations of Communication Method Settings and set the protocol of serial port A and serial port B so that their settings are matched. Set serial port A to None when connecting the Support Tool and the host at the same time.
  • L
    Lisa EllisSep 23, 2025
    What does '[No Screen Data]' mean on Omron Touch terminals and how to resolve it?
    • J
      Joe YoungSep 23, 2025
      The '[No Screen Data]' error on your Omron Touch terminals means that no screen data is registered. To resolve this, transmit screen data from the Support Tool.
  • M
    Mrs. Karen Fisher DVMAug 25, 2025
    How to resolve '[Programming Console Error] Programming Console Function does not RUN' error on Omron Touch terminal?
    • N
      Nathan CohenAug 25, 2025
      The '[Programming Console Error] Programming Console Function does not RUN' error appears because the connecting cable is defective, there is malfunction due to external noise, or a Programming Console is connected. Check the cable connection and perform a conductivity test. If there is a fault, replace the cable. Carry out grounding work. Disconnect the Programming Console.

Omron NT31 Specifications

General IconGeneral
Display TypeSTN LCD
Touch PanelAnalog resistive
Communication InterfaceRS-232C, RS-422/485
Power Supply24 VDC
Operating Temperature0 to 50 °C
Storage Temperature-20 to 60 °C
Display Size5.7 inch
Resolution320 x 240 pixels
CPU32-bit RISC
Humidity10 to 90% RH (non-condensing)
Shock Resistance15 G for 11 ms
Protection classIP65 (front panel)

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