¥ 价格面议
¥ 价格面议
¥ 价格面议
¥ 价格面议
易卖工控网(www.ymgk.com)提供”6DR2100-5 控制模块”,产品详情:品牌/厂家:其他品牌、型号:6DR2100-5、成色:全新、货期:期货 7天内发货、保修:365天,更多产品详情就上易卖工控网。
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利用PLC输入、输出指示灯判断第一层故障。指示灯亮与否是一个有效而又直观的检查和发现故障的手段。
外设故障一般发生在继电器、接触器;阀门、闸板;开关、限位开关、安全保护、就地和远控转换开关;接线盒、接线端子、螺栓螺母处;传感器、仪表;电源、地线和信号线的噪音等等,排除比较容易。
利用上位监控系统(monitor)功能判断第二层故障。
利用上位监控机在线监控状态,通过梯形图进行监控。如软触点显示不同的颜色代表不同的状态。查找输入元件Xo,若为on表明输入信号已送入第二层控制器,然后查找输出元件Yo,若其状态为on表明输出信号已在控制器内的寄存器中形成。如果输入输出的某端口坏了,可以利用冗余端口,将程序稍作改动,就可以恢复正常运行。