{
  "fixture": "Modbus 0x05 线圈值",
  "cases": [
    {
      "case_id": "开启",
      "kind": "正例",
      "result": {
        "address": 18,
        "on": true,
        "echo_matches": true
      }
    },
    {
      "case_id": "关闭",
      "kind": "正例",
      "result": {
        "address": 18,
        "on": false,
        "echo_matches": true
      }
    },
    {
      "case_id": "错误真值",
      "kind": "显式负例",
      "rejected": "线圈值不是FF00或0000"
    },
    {
      "case_id": "回显错误",
      "kind": "显式负例",
      "rejected": "回显不匹配"
    }
  ],
  "assertions_passed": 4,
  "scope": "合成输入离线演算；未接真实设备"
}