format_version: "0.1"
id: g_ftrig_edge
name: "ftrig edge (graphical LD twin)"
domain: packaging
language: LD-graphical
source:
  origin: authored
  reference: "Graphical PLCopen XML twin of the K-LD textual benchmark (syntax-coverage pair)"
  license: CC-BY-4.0
properties_file: props.yaml
safety_intent: "The falling-edge one-shot output must fire only on the scan the input signal goes low, not on every scan it stays low."
validation_status: validated
syntax_pair_of: ld_ftrig_edge
variants:
  - file: program.xml
    expected_verdict: true
    ground_truth:
      method: expert
features: [contacts, coils]
difficulty: easy
tags: [feature, semantics, syntax-pair]