Selecting the appropriate type of PLC machine is a crucial step in the design.At present,there are hundreds of PLC varieties produced by domestic and foreign PLC manufacturers,each with its own characteristics and different prices.Therefore,when designing,we should first consider the principle of model unity,and consider using the same series of PLC machines as the company is using as much as possible,so as to facilitate the convenience of learning,mastering and maintenance,and the versatility of spare parts.and reduce programming investment
选择适当型号的PLC机是设计中至关重要的一步。目前,国内外PLC生产厂家生产的PLC品种已达数百个,其性能各有特点,价格也不尽相同。所以,在设计时,首先要根据机型统一的原则来考虑,尽可能考虑采用与本企业正在使用的同系列的PLC机,以便于学习、掌握、维护的方便性,备品配件的通用性,且可减少编程的投资
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