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厦门市泰尼电器有限公司
主营产品: AB模块PLC |

![]() |
厦门市泰尼电器有限公司
主营产品: AB模块PLC |
参考价 | 面议 |
140CPU53414A 140CPU53414A
1. 图形式指令结构:程序由图形方式表达,指令由不同的图形符号组成,易于理解和记忆。系统的软件*已把工业控制中所需的独立运算功能编制成象征性图形,用户根据自己的需要把这些图形进行组合,并填入适当的参数。在逻辑运算部分,几乎所有的厂家都采用类似于继电器控制电路的梯形图,很容易接受。如西门子公司还采用控制系统流程图来表示,它沿用二进制逻辑元件图形符号来表达控制关系,很直观易懂。较复杂的算术运算、定时计数等,一般也参照梯形图或逻辑元件图给予表示,虽然象征性不如逻辑运算部分,也受用户欢迎
:张亮(工程师) 专线:
24小时移动专线: 【】
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