【摘要】 本文介绍了利用ＰＬＣ的普通数字量Ｉ／Ｏ接口进行低成本简易通讯，采用顺序功能ＢＦＣ编程。这一技术已经成功地可靠地应用于某一工程项目中，受到了用户的信赖。更多还原

【Abstract】 This paper introduces a simple low cost communication technicality by the application of the PLC numerlical I/O ports. and a programming with Sequential Function Chart (SFC).This technic had successfully been applied to a engineering which led up the consumer’s confidence.更多还原