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本文提出了减少PLC的I/O点数的几种有效方法 ,这些方法不仅适用于液压电梯 ,而且可以推广到机械电梯PLC控制系统中 ,对于减少电梯PLC控制系统的成本 ,具有一定的实用推广价值
This paper presents several effective ways to reduce PLC I / O points. These methods are not only suitable for hydraulic elevator, but also can be extended to mechanical elevator PLC control system, which has some practical promotion value for reducing the cost of elevator PLC control system