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PLC编程的笨方法与好方法我们都要会点

  • 2026-02-06 19:40:44
PLC编程的笨方法与好方法我们都要会点

PLC编程的笨方法与好方法我们都要会点

当我们想写一条很多个条件任意一条满足都能驱动线圈的时候，我们想到的笨方法一定是这样子的，功能完全实现，但是当我们有十几个或者更多时，整个画面都很难显示完一条程序，可读性就差了许多：

但是我们还可以这样子写,这个方法写起来是最简单的，但也有一个缺点就是当我们想知道具体是哪个导通了的时候就得去计算算出来是哪个M导通。因而这样的写法虽然简单，但是在查找问题时确不是那么方便。

最后一种方法就可以很好的解决这个问题：如图，每个信号导通与否很直观，也不会占行太多导致一条指令显示很长。

这种方法我们通常用于写综合报警或者感应器的综合状态等便于监控设备报警状态等。如果报警很多，分行写也是不错的

往期回顾:
汇川PLC之间用EIP通讯也很方便
关于三菱PLC与触摸屏日志做产量统计1
三菱触摸屏的弹窗控制很简单
三菱触摸屏做折线图加上下限区间做趋势监控可以这样做
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  1. CONNECT:[ UseTime:0.000405s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000582s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.011712s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.006699s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000538s ]
  6. SELECT * FROM `set` [ RunTime:0.001550s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000643s ]
  8. SELECT * FROM `article` WHERE `id` = 467675 LIMIT 1 [ RunTime:0.004140s ]
  9. UPDATE `article` SET `lasttime` = 1770495307 WHERE `id` = 467675 [ RunTime:0.025850s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.005661s ]
  11. SELECT * FROM `article` WHERE `id` < 467675 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.006190s ]
  12. SELECT * FROM `article` WHERE `id` > 467675 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.013458s ]
  13. SELECT * FROM `article` WHERE `id` < 467675 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.077994s ]
  14. SELECT * FROM `article` WHERE `id` < 467675 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.395611s ]
  15. SELECT * FROM `article` WHERE `id` < 467675 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.065451s ]
0.688738s