描述
继电器控制线路是由许多真正的硬件继电器组成的。而PLC是由许多“软继电器”组成的，这些“继电器”实际上是存储器中的触发器，可以置“0”或置“1”。硬继电器的触点数有限，一般只有4至8对；而“软继电器”可供编程的触点数有无限对，因为触发器状态可取用任意次。
REXROTH 4WF10D31/CW110N USPP 4WF10D31CW110N
MANNESMANN REXROTH VT-11029-11 USPP VT1102911
MANNESMANN REXROTH VT-11132-10 USPP VT1113210
Rexroth Heat Exchanger EKS-524-0 EKS5240 New in Box !!!
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BOSCH REXROTH HYDRAULIC PUMP S30S24HJ15L R978037281
Rexroth 4WE-6-J60 EW110N9K4 directional spool valve NEW
