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西门子电机1FL6062-1AC61-2AB1
西门子S7-300C的硬件诊断快速视图直接显示有故障的站点,我在作故障诊断时,在管理器执行菜单命令“PLC”→“诊断/设置”→“硬件诊断”,不能打开硬件诊断快速视图。
图一: 封边机系统示意图
三、关于电气安装方面的建议电子可控开关在动作时会产生大量的尖峰干扰信号,其峰值可能达到4000V
调用PUT指令,本例中本地S7-300 CPU将DB10.DBB0开始的10个字节写入通信伙伴CPU 的DB11.DBB0开始的10个字节中。
图14.PUT指令
参数 说明
REQ 上升沿触发,一次上升沿发送一次数据
ID 连接ID(参看图8)
ADDR_1 指向伙伴CPU接收地址区域
SD_1 指向本地CPU发送地址区域
DONE 发送完成(上升沿)
ERROR 有故障发生(上升沿)
STATUS 故障代码
表 3 PUT管脚说明
3.3调用GET指令,本例中将通信伙伴CPU的DB20.DBB0开始的10个字节读入到本地S7-300 CPU的DB21.DBB0开始的10个字节中。
图15.GET指令
参数 说明
REQ 上升沿触发,一次上升沿读取一次数据
ID 连接ID(参看图8
ADDR_1 指向伙伴CPU发送地址区域
RD_1 指向本地CPU接收地址区域
DONE 接收完成(上升沿)
ERROR 有故障发生(上升沿)
STATUS 故障代码
表 4 GET管脚说明
3.4 S7-300 CPU做S7通讯的客户端时,伙伴CPU*组态编程,准备好相应的数据区即可,如本例中的DB10和DB20。如果伙伴方是S7-1200(固件版本V4.0以上)或是S7-1500 CPU,需要在CPU属性的连接机制中勾选"允许来自远程对象的PUT/GET通信访问",如下图所示:
图16.连接机制
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