34F80000

Dummy Sensors Setting Error

Omron · NJ/NX-series Machine Automation Controller

What does 34F80000 mean?

An excessive number of dummy units are configured, which prevents real sensors from being assigned necessary logical unit numbers. This configuration error impacts the system's ability to properly recognize and utilize actual sensors.

Common Causes

  • Configuration includes too many Dummy Units, exhausting available logical unit numbers for actual sensors

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the current I/O configuration in Sysmac Studio for the Omron NJ/NX controller, focusing on the definition and assignment of physical and dummy I/O units.

  2. 2

    Identify all configured dummy units within the Sysmac Studio project and compare their quantity against the actual physical I/O modules and sensors installed.

  3. 3

    Check the logical unit number assignments for all real sensors and physical I/O modules within Sysmac Studio to identify conflicts or unassigned necessary logical numbers.

  4. 4

    Inspect the I/O table and memory allocation within the controller's project settings to confirm sufficient logical unit number space for all required real sensors.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Omron NJ/NX-series Machine Automation Controller