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  • 1. 如何确认某个指定日期是这一年中的第几周、第几天、星期几?
  • 2. 如何读取控制器的操作系统信息和TwinCAT版本等信息(FB_GetDeviceIdentificationEx)
  • 3. 什么功能块可以实现文件查找功能?如何获取指定文件的修改时间?(FB_EnumFindFileEntry)
  • 4. 如何获取程序执行时间?代码时间(profiler)
  • 5. FB_EnumFindFileList和FB_EnumFindFileEntry区别?(查找文件列表,文件有无)
  • 6. 队列、堆栈指令(fb_fileringbuffer)
  • 7. 有没有可以设置DDC(控制器)时间的函数?用于服务器定期与多个DDC做时间同步(NT_SetLocalTime)
  • 8. TwinCAT 3中自带的PID的函数有哪些?
  • 9. 如何将变量永久保存?用FB_WritePersistentData断电重新上电之后没有保存成功。
  • 10. 如何实现控制器的断电关机和重启,需要用哪个功能块?
  • 11. TwinCAT中,PLC启动、停止的功能块有哪些?
  • 12. TwinCAT 3有没有CRC16函数,不需要指定数据长度的
  • 13. 长度超过255的字符串需要怎么做?
  • 14. 如何去除字符串左右的空格、统一字符串大小写、长字符串分割成多个字符串、删除现有字符串内的部分字符串?
  • 15. 角度转弧度,弧度转角度的方法
  • 16. 时间比较(timestruct比较大小),日期比较(获取天数)
  • 17. 有BCD码转换为十进制的功能吗?
  • 18. TwinCAT 3如何通过NT_StartProcess控制windows程序(EXE可执行文件)启停?
  • 19. 如何字符串拼接?
  • 20. 怎么判断两个字符串相等,不区分大小写的方法?
  • 21. TwinCAT 3如何使用Hash算法进行数据加密
  • 22. PLC断电重启后,使用NT_StartProcess功能时ErrorID=1799原因及处理办法
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11. TwinCAT中,PLC启动、停止的功能块有哪些?

PLC启动:https://infosys.beckhoff.com/content/1033/tcplclib_tc2_utilities/35045515.html?id=3643975377693650589

PLC停止:https://infosys.beckhoff.com/content/1033/tcplclib_tc2_utilities/35047051.html?id=8726266713454962575


2017.11.28 邱赵煜 编辑


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