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。
STROMAG STROMATIC ADC 012.3 V DIGITAL SERVO CONTOLLER
AGILENT 86061C 2×8 LIGHTWAVE SWITCH,115/230V, 50/60MHz.
HP AGILENT E6392B GSM MOBILE MS TEST SET WITH OPT 002
HP 70004A DISPLAY FRAME AND HP70311A CLOCK SOURCE
Hewlett-Packard / Agilent E5272A FRAME WITH E5281A UNIT
SONY TEKTRONIX AFG2020 ARBITRARY FUNCTION GENERATOR
250MS/s synthesized FUNCTION GENERATOR WITH OPT 02
Hewlett-Packard E8285A CDMA Mobile Station Test Set
PHARMACIA BIOTECH ULTROSPEC 2000 MODEL 80-2106-00
BOC EDWARDS EXC 300M P NO D39615000 VACUUM CONTROLLER
YASKAWA AC SERVO MOTOR SGMT-14A2AX-TE1 WITH ENCODER
HP 8643A 0.26MHz-2060MHz SYNTHESIZED SIGNAL GENERATOR
with opt 002 UNIT UNDER REPAIR AS PARTS
