MVME5500-0161
¥888.00
MOTOROLA MVME5500-0161
¥888.00
SR469-P5-HI-A20
¥888.00
VCIB-16A
¥888.00
VIPC616
¥888.00
VMIC VMIPMC-5565
¥888.00
SEW MM07C-503-00
要使所编的程序合乎PLC的性能指标及工作要求所编程序的指令条数要少于所选用的PLC内存的容量，即程序在PLC中能放得下，所用的输入、输出点数要在所选用PLC的I/O点数范围之内，PLC的扫描时间要少于所选用PLC的程序运行监测时间。PLC的扫描时间不仅包括运行用户程序所需的时间，而且还包括运行系统程序，（如I/O处理、自监测）所需的时间。
5、所编程序能够循环运行 PLC的工作特点是循环反复、不间断地运行同一程序。运行从初始化后的状态开始，待控制对象完成了工作循环，则又返回初始化状态。只有这样才能使控制对象在新的工作周期中也得到相同的控制。
厦门岳航计算机工程有限公司
联系人：张芳
热线：0592-5087951+++手机：18030132582
传真：0592-5165561（请注明张芳收，谢谢！）
QQ：2946362425
地址：厦门思明区湖滨东路湖光大厦8楼B
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