140CPS11420
140CPS11420
140CPS11420
1．存储容量
存储容量是指用户程序存储器的容量。用户程序存储器的容量大，可以编制出复杂的程序。一般来说，小型PLC的用户存储器容量为几千字，而大型机的用户存储器容量为几万字。
2．I/O点数
输入/输出（I/O）点数是PLC可以接受的输入信号和输出信号的和，是衡量PLC性能的重要指标。I/O点数越多，外部可接的输入设备和输出设备就越多，控制规模就越大。
3．扫描速度
扫描速度是指PLC执行用户程序的速度，是衡量PLC性能的重要指标。一般以扫描1K字用户程序所需的时间来衡量扫描速度，通常以ms/K字为单位。PLC用户手册一般给出执行各条指令所用的时间，可以通过比较各种PLC执行相同的操作所用的时间，来衡量扫描速度的快慢。
厦门泰尼电气有限公司
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