编程编辑器的比较

选择编程编辑器的可能标准可能为：

减少需要的编程步骤数
通过节省编程窗口中的空间来提供更好的概述
在重组程序时节省时间

布尔运算：[LD/FBD编辑器] 推荐

LD/FBD(推荐)	ST	IL
	`(* 2 of 3 ) Y1:=NOT X1 AND X2 AND X3 OR X1 AND NOT X2 AND X3 OR X1 AND X2 AND NOT X3; ( Handle error case ) if (Error1 OR Error2 OR Error3) then Alarm:=TRUE; Horn :=TRUE; end_if; ( Confirm alarm ) if (ConfirmAlarm) then Horn:=FALSE; end_if; ( Reset alarm *) if (ResetAlarm AND NOT Error1 AND NOT Error2 AND NOT Error3) then Alarm:=FALSE; Horn :=FALSE; end_if;`
42步	35 步	35 步

LD/FBD(推荐)

(* 2 of 3 *)
Y1:=NOT X1 AND X2 AND X3 OR
    X1 AND NOT X2 AND X3 OR
    X1 AND X2 AND NOT X3;

(* Handle error case *)
if (Error1 OR Error2 OR Error3) then
    Alarm:=TRUE;
    Horn :=TRUE;
end_if;

(* Confirm alarm *)
if (ConfirmAlarm) then
    Horn:=FALSE;
end_if;

(* Reset alarm *)
if (ResetAlarm AND NOT Error1 AND NOT Error2 AND
NOT Error3) then
    Alarm:=FALSE;
    Horn :=FALSE;
end_if;

42步

35 步

函数调用：[LD/FBD编辑器] 推荐

LD/FBD(推荐)	ST	IL
	`(* Calculate statistical parameters *) if (bCalculateStatistics) then StatisticalCalculations(CalculateSum := bCalcSum, CalculateMean := bCalcMean, CalculateDeviation := bCalcDeviation, Number := 3, Input1 := Integer1, Input2 := Integer2, Input3 := Integer3, Sum => Sum, Mean => Mean, Deviation => Deviation); end_if;`
32 步	35 步	35 步

LD/FBD(推荐)

(* Calculate statistical parameters *)
if (bCalculateStatistics) then
   	StatisticalCalculations(CalculateSum := bCalcSum,
                            CalculateMean := bCalcMean,
                            CalculateDeviation := bCalcDeviation,
                            Number := 3,
                            Input1 := Integer1,
                            Input2 := Integer2,
                            Input3 := Integer3,
                            Sum => Sum,
                            Mean => Mean,
                            Deviation => Deviation);
end_if;

32 步

35 步

无条件计算：[ST编辑器] 推荐

LD/FBD	ST (推荐)	IL
	`(* Linear interpolation: ) y:=y1+(x-x1)(y2-y1)/(x2-x1);`
108 步	108 步	108 步

条件计算：[ST编辑器] 推荐

LD/FBD	ST (推荐)	IL
	`(* Conditional linear interpolation ) if (NOT(XLtX1) AND NOT(XGtX2) AND NOT(X1EqualX2)) then y:=y1+(x-x1)(y2-y1)/(x2-x1); end_if;`
111 步	109 步	109 步

if-else条件计算：[ST编辑器] 推荐

LD/FBD	ST (推荐)	IL
注释当从无条件更改为条件操作时，整个网络必须重绘！	`if (x > x1) then y:=y1; elsif (x < x2) then y:=y2; elsif (x1 = x2) then y:=(y1 + y2)/2; else (* Linear interpolation ) y:=y1+(x - x1)(y2 - y1)/(x2 - x1); end_if;`
194 步	190 步	194 步

循环操作：[ST编辑器] 推荐

LD/FBD	ST（推荐）	IL
	`Sum:=0; for i := 1 to 10 do Sum:=Sum+Array1[i]; end_for; Mean:=Sum/10;`

结论：

具有简单或布尔计算及函数或功能块调用的程序：[LD/FBD编辑器] 推荐
函数和功能块也适用于复杂算法：[ST编辑器] 推荐