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设计大中型可编程序控制系统时不要耗尽它的硬件和软件资源
对于设计的新系统,硬件上至少要保留15%左右的冗余,在软件编制时,同样要估计用户软件对计算机资源的需要与用量。尤其对中间继电器,计数器/定时器的使用,要留有余地 。因为在调试和运行后,软件总会被修改、补充,甚至重新编制。已编制的软件让人无法修改和完善,在工程上是不实际的。采采卷耳,不盈顷筐。嗟我怀人,寘彼周行。(寘 通:置)
陟彼崔嵬,我马虺隤。我姑酌彼金罍,维以不永怀。
陟彼高冈,我马玄黄。我姑酌彼兕觥,维以不永伤。
陟彼砠矣,我马瘏矣,我仆痡矣,云何吁矣。NUMATICS VALVE 33DSA4410013T
SULLIVAN PALATEK COALESCING FILTER AUTO DRAIN AND DPG SPT-062GA-U 1-1/2" NPT
Schrader Bellows PAG122301 30.500
REXROTH VALVE 3DR10P2-50/25Y
ASCO VALVE RED HAT 8344G80 3/8"
Hydraulic Cylinder 242805-2-48 9035193 G28203551 22" L 12" stroke 1-1/2" rod
KRACHT Pressure Relief Valve hvf50c2f1a012
ASCO Joucomatic 54202020
Wastebuilt Parts t/g lock cylinder H1-001-6720 001-6522 1180 9.5"
SMC Valve Rotary Actuator MSQB10H3
NUMATICS VALVE 33JDR5000 34JDR5150
SMC Valve Rotary Actuator MSQB20HX-F9NL-X65 MHL2-100-X28
NUMATICS VALVE 34JDR4410011D repl 33JDR4000011D
Ross Solenoid Valve Manifold (2) W6077B3431 (1) W6076B3437 (3) 665K91
FAIRCHILD Electro-Pneumatic Transducer TA6000-404
ASCO SB210DK
BOSCH Pressure Reducing 0811101203 315 BAR 811101203
New, Bimba Cylinder, CTB-00107-A-100
Numatics 252SS43AM000061
VICKERS PRESSURE CONTROL VALVE RCG06B130
NUMATICS VALVE 12DSA7410A
VICKERS VALVE B 60 879237DG4S4012CU
SMC CYLINDER MTS32-W2316-30
PARKER VALVE DB223MTF 10 BAR
NUMATICS VALVE 554BB600MP14D 150PSI
ROSS PNUEMATIC SOLENOID VALVE W6076B3401
Barksdale TXR-L2S-10-Q10
NUMATICS VALVE 34JPR4150 33JPR4000
NUMATICS VALVE 33JDR4410 repl 33JDR4000
ASCO VALVE 8210B78 PIPE 1" 120V 120 V
ASCO Joucomatic 54292028
VERSA FOOT LEVER AIR VALVE VNT 3601 VNT-3601
SMC CYLINDER MHKL2-25DS
NUMATICS 081SA400M000061
SMC MGPM50TF-50Z
SMC CYLINDER MXQ6L-40C
Rosemount 0444RL 1U1A1E5 Temperature Transmitter 0-75c 0444RL2U1A1E5
Rosemount 0444RL 2U1A1E5 Temperature Transmitter 70-210 c 0444RL2U1A1E5
CIRCUIT BOARD CARD 11809-2
SMC MGPM50TF-25Z
HYDROSEAL Safety Relief Valve 4FRV00F/E0 4FRV00F E0
ASCO Joucomatic 54191010 Pneumatic Solenoid Valve 54101010-120/60
SMC CYLINDER SLIDE TABLE MXS12-20AS
SMC Valve VFS5510-5DZ VFS5510 5DZ .1-1.0MPa
FAIRCHILD Electro-Pneumatic Transducer TA6000-401
SMC VALVE SLIDE TABLE SHOCK ABSORB MXS16L-20B
Rexroth 1" Filter R432003067 AS5-FRE-N034-GAU
VALMET HYDROTECHNIK FRUTIGEN AG VALVE SWESB-A-6