发布于 2015-03-25 20:54:45
4楼
十进制1转成二进制就是00000001,与QB0各个位的关系是:QB0.0=ON,QB0.1=OFF,QB0.2=OFF,QB0.3=OFF,QB0.4=OFF,QB0.5=OFF,QB0.6=OFF,QB0.7=OFF。如果指令是 LD SM0.1 MOV B 131 QB0,则十进制131转成二进制就是10000011,与QB0各个位的关系是:QB0.0=ON,QB0.1=ON,QB0.2=OFF,QB0.3=OFF,QB0.4=OFF,QB0.5=OFF,QB0.6=OFF,QB0.7=ON。