输入接线还应特别注意：
1.电源指示（[POWER]LED指示）
工业网络防护**正在关注如何保护工厂和过程自动化系统。遗留系统非常重要，因为它们主导了控制系统的结构，并且其中许多仍有很长寿命。它们的设计也不，所以工业网络防护的重点主要集中在保护脆弱的网络和控制元件。供应商为新系统制定了类似的策略，因为其中大多数都基于遗留的产品平台和协议。
这样,可以方便的在程序中通过对PLC存储器位操作来判断其冗余工作状态,从而判断控制器所处的主从地位,主控制器参与设备的控制,从控制器同样进行数据的采集,运算,并监视主控制器的运行状况,如有异常,立刻平稳的切换为主控制器。
PLC的供电电源为50Hz、220V±10%交流市电。
要注意的是只用到一个PLSY指令，这是因为它的输出如所要求的那样，直接与四个电机中的每个相连(一个电机对应于一个窗户)。检测窗户位置为全开或全关，如果其中一个条件存在，与它对应的控制电机就关断。
联系人：李工[销售工程师]
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公司全称：
福州卓凯电子科技有限公司
公司地址：
福建省福州市闽侯甘蔗街道阳光城领海1栋2608室
本公司专业销售全球**品牌备品备件
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