CONTROL DEVICE HDS03.2-W100N-HS37-01-FW R911281848 REXROTH

A06B-0653-B005
1326AS-B460F-21
1394-SJT10-T-RL
57310001-LM
2711-B5A16
GT1695M-XTBD
2711P-T15C15D1
57C493
57C435
CC-PAIH01
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描述

在继电器控制线路中,当电源接通时,线路中各继电器都处于受制约状态,该合的合,该断的断。而在PLC的梯形图中,各“软继电器”都处于周期性循环扫描接通中,从客观上看,每个“软继电器”受条件制约,接通时间是短暂的。也就是说继电器在控制的工作方式是并行的,而PLC的工作方式是串行的。

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