6ES7972-0BA60-0XA0 SIEMENS
l当复位输入X010接通(ON)时,执行RST指令,计数器的当前值为0,输出接点也复位。
l应注意的是,计数器C100~C199,即使发生停电,当前值与输出触点的动作状态或复位状态也能保持。
六、数据寄存器
数据寄存器是计算机的元件,用于存放各种数据。FX2N中每一个数据寄存器都是16bit(高位为正、负符号位),也可用两个数据寄存器合并起来存储32 bit数据(高位为正、负符号位)。
1)通用数据寄存器D通道分配D 0~D199,共200点。
只要不写入其他数据,已写入的数据不会变化。但是,由RUN→STOP时,全部数据均清零。(若特殊辅助继电器M8033已被驱动,则数据不被清零)。
2)停电保持用寄存器通道分配D200~D511,共312点,或D200~D999,共800点(由机器的具体型号定)。
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