系统响应时间:指输入信号产生时刻与输出信号状态发生变化的时间间隔,若输入信号的变化频率快于一个扫描周期,系统就不能可靠地响应每个输入信号,这时应尽量缩短程序,提高响应速度。
2)既有开关量控制,又有模拟量控制,以及通讯要求等大中型控制系统,可考虑用模块式结构,易于功能的扩展,同时模块式结构一旦发生故障比较容易排除。
HONEYWELL R7353A 1005 1 DIALATROL TEMPERATUR CNTRL, NIB
DURANT 6-Y-1-2-RMF-PMU COUNTER, NNB
WILKERSON, X01-04-004, MECHANICAL DRAIN, 1 QT, 1/2" NPT
PARKER F1600S 1" 3000 PSI 40 GPM HYDRAULIC VALVE, NNB
ALLEN BRADLEY 800T-N251KF4B SELETOR SWITCH TYPE 4, 13,

ECLIPSE COMBUSTION ECI-L8040G22, SOLENOID VALVE, 1/2" N
MRC R16ZZ BEARING, 2.001" OD, 0.999" ID, 0.499" SHAFT,
TEKTRONIX A6902 ISOLATOR W/ MANUAL
ACOPIAN B5G800 GOLD BOX LINEAR REGULATED POWER SUPPLY F
ASST BOX OF SERVO CABLES, TRANSCEIVERS, AND COAX TAPS
HUGHES LAN SYSTEMS A005139-05 TERMINAL SERVER RJ45
ASHCROFT DRESSER 125/250VAC INDUSTRIAL PRESSURE SWITCH
N-TRON 10-30VDC 16-PORT INDUSTRIAL ETHERNET SWITCH 516T
OILGEAR CO VDS510-D03-115/?HAC-10 SOLENOID VALVE, 110/11
JASON INDUSTRIAL 4400-8M 8MM HTD TIMING BELT,
SMC, NVV5FS3-01T-021?-03T, MANIFOLD, 2 STATIONS, 3/8" NP