SCL 节拍发生器：10Hz/2Hz/1Hz 方波与上升沿

PASS  10 个 50ms 扫描 (1 step(s), 10 scan(s))
PASS  第 5 个扫描：2Hz 翻转 (1 step(s), 5 scan(s))
RESULT: ALL PASS (15 scan(s))

{
  "sources": [
    {
      "name": "blocks/FB_TaktGenerator.scl",
      "source": "FUNCTION_BLOCK \"FB_TaktGenerator\"\n{ S7_Optimized_Access := 'TRUE' }\nVERSION : 0.1\n   VAR_INPUT\n      CycleTime : Time;   // 本次扫描经过的时间，例如 T#10ms\n   END_VAR\n\n   VAR_OUTPUT\n      Takt10Hz : Bool;    // 10 Hz 方波\n      Takt2Hz : Bool;     // 2 Hz 方波\n      Takt1Hz : Bool;     // 1 Hz 方波\n      Edge10Hz : Bool;    // 10 Hz 上升沿（一个扫描周期）\n      Edge2Hz : Bool;     // 2 Hz 上升沿\n      Edge1Hz : Bool;     // 1 Hz 上升沿\n   END_VAR\n\n   VAR\n      Acc10 : Time;       // 10 Hz 累加器\n      Acc2 : Time;        // 2 Hz 累加器\n      Acc1 : Time;        // 1 Hz 累加器\n      State10 : Bool;     // 10 Hz 当前电平\n      State2 : Bool;      // 2 Hz 当前电平\n      State1 : Bool;      // 1 Hz 当前电平\n      Prev10 : Bool;      // 10 Hz 上一周期电平\n      Prev2 : Bool;       // 2 Hz 上一周期电平\n      Prev1 : Bool;       // 1 Hz 上一周期电平\n   END_VAR\n\n   VAR CONSTANT\n      HALF_10HZ : Time := T#50MS;   // 10 Hz 半周期\n      HALF_2HZ : Time := T#250MS;   // 2 Hz 半周期\n      HALF_1HZ : Time := T#500MS;   // 1 Hz 半周期\n   END_VAR\n\nBEGIN\n   REGION 累加时间\n      #Acc10 := T_ADD(IN1 := #Acc10, IN2 := #CycleTime);\n      #Acc2 := T_ADD(IN1 := #Acc2, IN2 := #CycleTime);\n      #Acc1 := T_ADD(IN1 := #Acc1, IN2 := #CycleTime);\n   END_REGION\n\n   REGION 翻转节拍\n      IF #Acc10 >= #HALF_10HZ THEN\n         #State10 := NOT #State10;\n         #Acc10 := T#0MS;\n      END_IF;\n      IF #Acc2 >= #HALF_2HZ THEN\n         #State2 := NOT #State2;\n         #Acc2 := T#0MS;\n      END_IF;\n      IF #Acc1 >= #HALF_1HZ THEN\n         #State1 := NOT #State1;\n         #Acc1 := T#0MS;\n      END_IF;\n   END_REGION\n\n   REGION 输出与边沿\n      #Takt10Hz := #State10;\n      #Takt2Hz := #State2;\n      #Takt1Hz := #State1;\n      #Edge10Hz := #State10 AND NOT #Prev10;\n      #Edge2Hz := #State2 AND NOT #Prev2;\n      #Edge1Hz := #State1 AND NOT #Prev1;\n      #Prev10 := #State10;\n      #Prev2 := #State2;\n      #Prev1 := #State1;\n   END_REGION\nEND_FUNCTION_BLOCK\n"
    }
  ],
  "scenario": {
    "docs": [
      "blocks/FB_TaktGenerator.scl"
    ],
    "block": "FB_TaktGenerator",
    "tickMs": 50,
    "seed": {
      "CycleTime": "T#50MS"
    },
    "always": [
      "!(Edge10Hz && !Takt10Hz)",
      "!(Edge2Hz && !Takt2Hz)",
      "!(Edge1Hz && !Takt1Hz)"
    ],
    "scenarios": [
      {
        "name": "10 个 50ms 扫描",
        "steps": [
          {
            "ticks": 10,
            "expect": {
              "Takt10Hz": false,
              "Takt2Hz": false,
              "Takt1Hz": true,
              "Edge1Hz": true,
              "Edge10Hz": false
            }
          }
        ]
      },
      {
        "name": "第 5 个扫描：2Hz 翻转",
        "steps": [
          {
            "ticks": 5,
            "expect": {
              "Takt10Hz": true,
              "Takt2Hz": true,
              "Takt1Hz": false,
              "Edge2Hz": true
            }
          }
        ]
      }
    ]
  }
}