format_version: "0.1"
id: g_ton_single
name: "ton single (graphical LD twin)"
domain: hvac
language: LD-graphical
source:
  origin: authored
  reference: "Graphical PLCopen XML twin of the K-LD textual benchmark; PT is a duration literal resolved against the task interval"
  license: CC-BY-4.0
properties_file: props.yaml
safety_intent: "The on-delay light can be on only while the button is, or was very recently, pressed."
validation_status: candidate
syntax_pair_of: ld_ton_single
variants:
  - file: program.xml
    expected_verdict: true
    ground_truth:
      method: expert
metrics:
  rungs: 2
  pous: 1
  variables: 4
features: [contacts, coils, timer_ton]
difficulty: easy
tags: [feature, semantics, syntax-pair, timer]