描述
PLC系统与dcs系统的结构差异不大,只是在功能的着重点上的不同,DCS着重于闭环控制及数据处理。PLC着重于逻辑控制及开关量的控制,也可实现模拟量控制。
HIBON PUMPING SYSTEM T10651 -PN: 79995.26 -REFURBISHED
Varian Vacuum Ion Pump Reference Plate Ass’bly C0401130
Varian Vacuum Ion Pump Lens Ring P/N: C0312002 Unused!
Varian Vacuum Ion Pump Gun Valve Top Plate C0311001
Varian Vacuum Ion Pump Housing Gun Valve P/N: C0304007
Varian Vacuum Ion Pump Gun Lens P/N: C0306000
Pfeiffer Balzers TPU-1500 Plasma Turbo Pump TPH Vacuum
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