Display Unit System Settings (Offline)
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M.9.4 Checking the operation of the device connected to the DIO interface of the LT3000 and LT4000 series

Check if the input and output operate normally

Check the input and output of the LT series DIO interface to judge whether the problem is caused by GP-Pro EX settings or by the LT series.

  1. Enter offline mode and from the item changeover switch, touch [Peripheral Settings].

  2. [Peripheral Settings] screen opens. Touch [I/O Driver] and then [ STD Driver].

  3. [STD Driver] screen opens. Touch [Terminals] to confirm the current configuration of the input/output terminals.

    • When the LT-33** series is used, it displays the configuration of input terminals X0 to X15 and output terminals Y0 to Y15. The bottom of the screen shows [X8-X15: Std. Input] and [Y4-Y15: Std. Output].

  4. Touch [Back] or [←] to return to the previous screen. Next, touch [I/O Monitor].

  5. [I/O Monitor] screen opens. The corresponding bit numbers in [Input] are highlighted to match the ON/ OFF status of corresponding inputs from the connected device. [Output]: You can confirm the ON/ OFF status of each output by touching the corresponding bit number.

    • [Details]: If the input filter time has been specified in the Details, input signals not received within the defined time will not work.
      M.24.3.1 Peripheral Settings - I/O Driver Settings (STD Driver), I/O Monitor

    • With the LT-33** series, you can check the status by using inputs and outputs 0 through 15 respectively.

  6. If the connected device is operating normally, check the project file settings in GP-Pro EX. If the connected device does not operate normally, check the wiring between the LT series and the connected device, and then check the following items.

Checking the I/O board

Check the I/O board in the LT series to find an abnormality in the main unit.

  1. Enter offline mode and from the item changeover switch, touch [Peripheral Settings].

  2. [Peripheral Settings] screen opens. Touch [I/O Driver] and then [ STD Driver].

  3. [STD Driver] screen opens. Touch [Chk Board], then touch [Start].

  4. If there is no problem with the I/O board, [OK] is displayed. If there is a problem with the I/O board, an error message appears.