format_version: "0.1"
id: st_pump_alternation
name: "duty-standby pump station with alternation (ST twin)"
domain: water_treatment
language: ST
source:
  origin: authored
  reference: "Structured Text rendering of g_pump_alternation, for cross-language comparison of the same machine"
  license: CC-BY-4.0
properties_file: props.yaml
validation_status: candidate
syntax_pair_of: g_pump_alternation
variants:
  - file: pump_alternation.st
    expected_verdict: true
    ground_truth:
      method: expert
features: [toggle, mutual_exclusion]
difficulty: medium
tags: [syntax-pair]