以下是一个使用案例程序，包含了两个配方及其调用过程的实现。代码中有详细的中文注释说明，供参考：```// 配方列表数据块在PLC的DB块中进行定义。
// 定义每种配方对应的属性结构体
TYPE RecipeProperties :
STRUCT
Water : INT; // 水的重量
Juice : INT; // 果汁的重量
Mix : INT; // 混合物的重量
Additives : ARRAY[1..5] OF INT; // 添加剂的重量
END_STRUCT
END_TYPE
// 定义配方列表数据块
DATA_BLOCK RecipeListDB :
STRUCT
RecipeA : RecipeProperties; // 配方A对应的属性结构体
RecipeB : RecipeProperties; // 配方B对应的属性结构体
END_STRUCT
END_DATA_BLOCK
// 初始化配方列表数据块
VAR_INIT
RecipeList := (RecipeA := (Water := 500, Juice := 200, Mix := 300, Additives := [10, 20, 30, 40, 50]),
RecipeB := (Water := 800, Juice := 0, Mix := 200, Additives := [20, 30, 40, 50, 60]));
// 定义一个函数块，用于计算配方的重量
FUNCTION_BLOCK RecipeCalculator
VAR_INPUT
RecipeNum : INT; // 配方编号
END_VAR
VAR_OUTPUT
Weight : INT; // 配方的总重量
WaterWeight : INT; // 水的重量
JuiceWeight : INT; // 果汁的重量
MixWeight : INT; // 混合物的重量
AdditivesWeights : ARRAY[1..5] OF INT; // 添加剂的重量
END_VAR
VAR
Recipe : RecipeProperties; // 配方的属性
i : INT; // 循环变量
END_VAR
RecipeListDB AT %DB1 : RecipeList;
// 根据配方编号，获取配方属性
IF RecipeNum = 1 THEN
Recipe := RecipeList.RecipeA;
ELSIF RecipeNum = 2 THEN
Recipe := RecipeList.RecipeB;
ELSE
// 配方编号不正确，返回0
Weight := 0;
RETURN;
ENDIF
// 计算配方的总重量
WaterWeight := Recipe.Water;
JuiceWeight := Recipe.Juice;
MixWeight := Recipe.Mix;
FOR i := 1 TO 5 DO
AdditivesWeights[i] := Recipe.Additives[i];
Weight := Weight + AdditivesWeights[i]; // 计算添加剂总重量
END_FOR
Weight := Weight + WaterWeight + JuiceWeight + MixWeight; // 计算配方总重量
END_FUNCTION_BLOCK
// 定义主程序
PROGRAM MainProgram
VAR_INPUT
RecipeType : INT; // 配方类型，取值范围：1 ~ 2
END_VAR
VAR_OUTPUT
RecipeWeight : INT; // 配方的总重量
WaterWeight : INT; // 水的重量
JuiceWeight : INT; // 果汁的重量
MixWeight : INT; // 混合物的重量
AdditivesWeights : ARRAY[1..5] OF INT; // 添加剂的重量
END_VAR
VAR
RecipeCalculator : RecipeCalculator; // 实例化配方计算器函数块
END_VAR
// 调用配方计算器，计算出配方属性
RecipeCalculator(RecipeType := RecipeType);
IF RecipeCalculator.Weight > 0 THEN
// 配方计算器计算成功，获取配方属性
RecipeWeight := RecipeCalculator.Weight;
WaterWeight := RecipeCalculator.WaterWeight;
JuiceWeight := RecipeCalculator.JuiceWeight;
MixWeight := RecipeCalculator.MixWeight;
AdditivesWeights := RecipeCalculator.AdditivesWeights;
ELSE
// 配方计算器计算失败，返回0
RecipeWeight := 0;
WaterWeight := 0;
JuiceWeight := 0;
MixWeight := 0;
AdditivesWeights := [0, 0, 0, 0, 0];
ENDIF
// 显示配方的属性和总重量
DisplayMessage(\'Current Recipe: %d\\n\', RecipeType);
DisplayMessage(\'Total Weight: %d g\\n\', RecipeWeight);
DisplayMessage(\'Water Weight: %d g\\n\', WaterWeight);
DisplayMessage(\'Juice Weight: %d g\\n\', JuiceWeight);
DisplayMessage(\'Mix Weight: %d g\\n\', MixWeight);
FOR i := 1 TO 5 DO
DisplayMessage(\'Additives%d Weight: %d g\\n\', i, AdditivesWeights[i]);
END_FOR
// 定义配方初始化程序
PROGRAM RecipeInitializer
VAR
i : INT; // 循环变量
END_VAR
// 初始化RecipeList数据块
FOR i := 0 TO SIZEOF(RecipeListDB)-1 BY 1 DO
RecipeListDB[i] := 0;
END_FOR
RecipeList := (RecipeA := (Water := 500, Juice := 200, Mix := 300, Additives := [10, |
