描述
PLC控制系统的程序设计要点。PLC控制系统I/O分配，依据生产流水线从前至后，I/O点数由小到大;尽可能把一个系统、设备或部件的I/O信号集中编址，以利于维护。定时器、计数器要统一编号，不可重复使用同一编号，以确保PLC工作运行的可靠性。
Nash CL9001 CL9002 vacuum pump
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Nice 1140 hour 25hp Sullair Rotary Vacuum Pump RSVS-12
Oil Rotary Piston Vacuum Pump WSDR 15K NIB
Roots Vacuum Pump FRU2880 NIB
NEW BOC Edwards iF-1800 (iF1800) Dry Vacuum Pump
Edwards BOC iL600 Dry Semiconductor Vacuum Pump
Edwards BOC iL600N Dry Semiconductor Vacuum Pump
Leybold Oerlikon TurboVac MAG W 1300 C Turbo Pump
Expedited shipping available
Edwards iL600N Vacuum Dry Pump Rebuilt
Industrial Vacuum System
Ebara AAS70WN Refurbished
Leybold MAG W 1300 Turbo Pump; DRIVE digital Controller
Sold tested as set with cables and a one year warranty.
