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。
Amray 3800L Scanning Electron Microscope SEM 904
Brand New Feeler 3.5 tons DIESEL FORKLIFT TRUCK
Brand New Clark 2010 C25D 2.5 Tons Diesel Forklift
Fusion UV Light Hammer great condition
VARIAN TURBO-V 70 With Varian controller
HP 4192A 5Hz-13MHz LF IMPEDANCE ANALYZER
ERICSSON FSU 925 RTC Fusion Splicer V-groove
TURBO VACUUM VALVE IDX + Yokogawa 2.5+ ORIX FAN + Omron
HP 5361B PULSE / CW MICROWAVE COUNTER 20GHz
CYMER Module 144849 High Voltage Power Supply
Juniper PB-1GE-SFP-QPP Ethernet 1000BASE-X SFP Module
