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- 型号:330003-01-00
- 数量:3
- 制造商: 厦门兴锐达自动化设备有限公司
- 有效期:2019/10/9 0:00:00
BENTLY NEVADA 330003-01-00
BENTLY NEVADA 330003-01-00
BENTLY NEVADA 330003-01-00
近年来PLC技术发展很快,每年都推出不少新产品。据不完全统计,美国、日本、德国等出产PLC的厂家已达150多家,产品有数百种。PLC的功用也在不断增加,首要表现在:
1)控制规划不断扩大,单台PLC可控制成千甚至上万个点,多台PLC进行同位链接可控制数万个点。
2)指令系统功用增强,能进行逻辑运算、计时、计数、算术运算、PID运算、数制改换、ASCⅡ码处理。高级PLC还能处理间断、调用子程序等。使得PLC可以完毕逻辑控制、模拟量控制、数值控制和其他进程监控,致使在某些方面可以替代小型计算机控制。
3)处理速度行进,每个点的均匀处理时间从10μs左右行进到1μs以内。
4)编程容量增大,从几K字节增大到几十K,甚至上百K字节。
5)编程言语多样化,大多数运用梯形图言语和句子表言语,有的还可运用流程图言语或高级言语。
6)增加通讯与联网功用,多台PLC之间能相互通讯,相互沟通数据,PLC还可以与上位计算机通讯,承受计算机的指令,并将施行效果通知计算机。通讯接口多选用RS-422/RS-232C等标准接口,以完毕多级集散控制。
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