摘要
IEC61158现场总线国际标准于1999年12月通过,有8个类型,IEC62026于2000年6月通过,有3个类型,加上ISO的两个CAN国际标准,因此已经有13个现场总线国际标准面世。实际上现场总线作为国际标准的意义已经不大,真正的现场总线危机已经开始,文章就这些问题展开讨论。
International standards for IEC 61158 site bus were passed in December 1999 with 8 varieties; IEC 62026 was passed in June 2000 With 3 varieties, plus two CAN international standards of ISO . Therefore there have been 13 international standards on site buses. In fact, it is of less importance that the site bus is taken as the international standard. An actual site bus crisis has begun. This paper deals with these problems.
