RJ0510096 RJ0510096 RJ0510096

3HAC028357-001 DSQC 679
FBM216 P0917 TN
corona2 Y7030 02 REV.B
SDSGAXX056-220
Kollmorgen s61000-610
6181P-15A2HW71AC
Honeywell MC-TAMT04/51305890-175
MVME162-353
P0973JP A4H254-8F8T

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描述

PLC和编程器公用一个CPU,编程器在编程模式时,CPU只为编程器提供服务,不对现场设备进行控制。完成编程后,编程器切换到运行模式,CPU对现场设备进行控制,不能进行编程。离线编程方式可降低系统成本,但使用和调试不方便。在线编程方式:CPU和编程器有各自的CPU,主机CPU负责现场控制,并在一个扫描周期内与编程器进行数据交换,编程器把在线编制的程序或数据发送到主机,下一扫描周期,主机就根据新收到的程序运行。这种方式成本较高,但系统调试和操作方便,在大中型PLC中常采用。

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