ShortCircuitGround

Short Circuit to Ground

Allen-Bradley · Compact 5000 Digital I/O Modules

What does ShortCircuitGround mean?

This diagnostic indicates that a short circuit to ground condition exists on an output point. This means the output wiring or the connected load has inadvertently made contact with the protective earth ground or a grounded enclosure. The tag automatically resets to 0 when the condition is removed.

Common Causes

  • Output wiring insulation breakdown, causing contact with a grounded surface or enclosure
  • Internal fault within the load device causing its output terminal to short to ground
  • Incorrect wiring where the output terminal is directly connected to ground

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Disconnect the load from the affected output terminal.

  2. 2

    Use a multimeter to measure resistance between the output terminal and protective earth ground — expect a very high resistance (open circuit).

  3. 3

    Visually inspect all physical wiring associated with the affected output for damaged insulation or contact with grounded components.

Browse all codes in this manual (38)
Verified technical data. Last updated: March 2026

Related Faults

Source: Allen-Bradley Compact 5000 Digital I/O Modules