描述
工作速度是指PLC的CPU执行指令的速度及对急需处理的输入信号的响应速度。工作速度是PLC工作的基础。速度高了，才可能通过运行程序实现控制，才可能不断扩大控制规模，才可能发挥PLC的多种多样的作用。
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