siemens西门子宽温6ag1155-6au01-7bn0
siemens西门子宽温6ag1155-6au01-7bn0
siemens西门子宽温6ag1155-6au01-7bn0
福建鸿飞达自动化科技有限公司
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s5plc具有自诊断能力,发生模块功能错误时往往能报警并按预先程序作出反应,通过故障指示灯就可判断。当电源正常,各指示灯也指示正常,特别是输入信号正常,但系统功能不正常(输出无或乱)时,本着先易后难、先软后硬的检修原则首先检查用户程序是否出现问题。s5的用户程序储存在plc的ram中,是掉电易失性的,当后备电池故障系统电源发生闪失时,程序丢失或紊乱的可能性就很大,当然强烈的电磁干扰也会引起程序出错。有eprom存储卡及插槽的plc恢复程序就相当简单,将eprom卡上的程序拷回plc后一般都能解决问题;没有eprom子卡的用户就要利用pg的联机功能将正确的程序发送到plc上。需要特别说明的是,有时简单的程序覆盖不能解决问题,这时在重新拷贝程序前总清一下ram中的用户程序是相当必要的。通过将plc上的“run”“st”开关按run---st---run---st---run的顺序拨打一遍或在pg上执行“bbbbbb—blocks—delete---inplc—allblocks---overall—reset”功能就完成了ram中程序的总清。另外,保存在eprom中的程序并不是万无一失的,过分相信eprom上的程序有时会给检修带来困惑。所以经常性的检查核对eprom中的程序,特别是pg中的备份程序就显的尤为重要。
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