PLC和继电器控制最大的区别是控制过程的可调整性,按照这种说法,虽然只有8点I/O,但过程逻辑控制是可以很复杂的,比如顺序控制,时间控制,伺服控制等,如果用继电器实现的话会很难或不可能实现的,而且日后要有所更改将会非常痛苦...
Parker Pressure Comp Flow Control 3000PSI # PCMS1600S
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PARKER HYDRAULIC PRESSURE REDUCING VALVE~NEW~SURPLUS~
PARKER 422-8-RL MEDIUM PRESSURE HYDRAULIC HOSE 1/2"
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PRESSURE REDUCING GAUGE VERIFLO PARKER NPR73530W4PXFSM
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NEW PARKER PRESSURE SWITCH SCPSD-250-04-17
Parker 240' 1/2" Low Pressure 250 PSI Rubber Hose 801-8
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