80190-600-01-R 80190-600-01-R
什么是系统冗余?
在一些对系统可靠性要求很高的应用中,DCS的设计需要考虑热备份也就是系统冗余,这是指系统中一些关键模块或网络在设计上有一个或多个备份,当现在工作的部分出现问题时,
系统可以通过特殊的软件或硬件自动切换到备份上,从而保证了系统不间断工作。通常设计的冗余方式包括:CPU冗余、网络冗余、电源冗余。在极端情况下,一些系统会考虑全系统冗余,即还包括I/O冗余。
8.什么是I/O余量?
与冗余不同,I/O余量只是系统中I/O数量大于应用的要求,这种余量只是数量上的,主要目的是使系统今后有继续加入控制信号的可能。
6FX5002-2CA31-1BG0 SIGNAL CABLE,PREFAB,MC500,16M Siemens
6FX5002-2CA31-1BH0 CABLE,SIGNAL,PREFAB,ERN,SHLD,MC500,17M Siemens
6FX5002-2CA31-1BJ0 PREFAB,SIGCB,ERN,STD,SHLD,18M Siemens
6FX5002-2CA31-1BK0 SIGNAL CABLE,PREFAB,MC500,19M Siemens
6FX5002-2CA31-1CA0 PREFAB,PWRCB,STD,ERN,SHLD,20M Siemens
6FX5002-2CA31-1CC0 PREFAB,SIGCB,ERN,STD,SHLD,22M Siemens
6FX5002-2CA31-1CD0 PREFAB,CABLE,ERN,STD,SHLD,23M Siemens
6FX5002-2CA31-1CE0 SIGNAL CABLE,PREFAB,MC500,24M Siemens
6FX5002-2CA31-1CF0 PREFAB,CABLE,ERN,STD.SHLD,25M Siemens
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6FX5002-2CA31-1CK0 CABLE,SIGNAL,PREFAB,MC500,29M Siemens
6FX5002-2CA31-1DA0 PREFAB,CABLE,ERN,STD,SHLD,30M Siemens
6FX5002-2CA31-1DB0 SIGNAL CABLE,PREFAB,MC500,31M Siemens
6FX5002-2CA31-1DC0 SIGNAL CABLE,PREFAB,MC500,32M Siemens
6FX5002-2CA31-1DD0 SIGNAL CABLE,PREFAB,MC500,33M Siemens
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6FX5002-2CA31-1DF0 CABLE-SIGNAL, PREASSEMBLED 35M Siemens
6FX5002-2CA31-1DG0 SIGNAL CABLE,PREFAB,MC500,36M Siemens
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6FX5002-2CA31-1DJ0 SIGNAL CABLE,PREFAB,MC500,38M Siemens
6FX5002-2CA31-1EA0 PREFAB,CABLE,ERN,STD.,SHIELDED,40M Siemens
6FX5002-2CA31-1EC0 SIGNAL CABLE,PREFAB,MC500,42M Siemens
6FX5002-2CA31-1EF0 PREFAB,SIGCBL,ERN,STD,SHLD,45M Siemens
6FX5002-2CA31-1EG0 SIGNAL CABLE,PREFAB,MC500,46M Siemens
6FX5002-2CA31-1FA0 PREFAB,CABLE,ERN,STD,SHLD,50M Siemens
6FX5002-2CA31-1FE0 SIGNAL CABLE,PREFAB,MC500,54M Siemens
6FX5002-2CA31-1FF0 PREFAB,CABLE,ERN,STD,SHLD,55M Siemens
6FX5002-2CA31-1GA0 PREFAB,CBL,ERN,STD,SHLD,60M Siemens
6FX5002-2CA20-1AC0 SIGNAL CABLE,PREFAB,MC500,2M Siemens
6FX5002-2CA20-1AD0 SIGNAL CABLE,PREFAB,MC500,3M Siemens
6FX5002-2CA20-1AF0 SIGNAL CABLE,PREFAB,MC500,5M Siemens
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6FX5002-2CA20-1BF0 CABLE,SIGNAL,PREFAB,DMAX=9.9MM,MC500,15M Siemens
6FX5002-2CA20-1BJ0 SIGNAL CABLE,PREFAB,MC500,18M Siemens
6FX5002-2CA20-1CF0 SIGNAL CABLE,PREFAB,MC500,25M Siemens
6FX5002-2CA20-1CJ0 SIGNAL CABLE,PREFAB,MC500,28M Siemens
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6FX5002-2CA24-1AF0 SIGNAL CABLE,PREFAB,M17,5M Siemens
6FX5002-2CA31-1AB0 PREFAB,CABLE,ENC,STD,SHLD,1M Siemens
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6FX5002-2CA31-1AE0 PREFAB,PWRCB,STD,ERN,SHLD,4M Siemens
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6FX5002-2CA31-1AF0 PREFAB,CABLE,ERN,STD.,SHIELDED,5M Siemens
6FX5002-2CA31-1AG0 PREFAB,CABLE,ERN,STD,SHLD,6M Siemens
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6FX5002-2CA31-1AJ0 PREFAB,PWRCB,STD,ERN,SHLD,8M Siemens
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6FX5002-2CA31-1BB5 SIGNAL CABLE,PREFAB,MC500,11.5M Siemens
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6FX5002-2CA31-1BE0 SIGNAL CABLE,PREFAB,MC500,14M Siemens
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6FX5002-2AH11-1BA0 SIGNAL CABLE,PREFAB,TRAILING, MC800,10M Siemens
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6FX5002-2CA11-1AE0 PREFAB,PWRCB,STD,ENC,SHLD,4M Siemens
6FX5002-2CA11-1AF0 SIGNAL CABLE,PREFAB,MC500,5M Siemens
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6FX5002-2CA11-1BF0 SIGNAL CABLE,PREFAB,MC500,15M Siemens
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6FX5002-2CA12-1AG0 SIGNAL CABLE,PREFAB,MC500,6M Siemens
6FX5002-2CA12-1BA0 CABLE HTL/TTL ENCODER SIMOVERT (10M) Siemens
6FX5002-2CA12-1CA0 SIGNAL CABLE,PREFAB,MC500,20M Siemens
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6FX5002-2AH00-1DA0 PREFAB,CABLE,ROD,STD,SHLD,30M Siemens
6FX5002-2AH00-1DE0 SIGNAL CABLE,PREFAB,MC500,34M Siemens
6FX5002-2AH00-1DF0 PREFAB,CABLE,ROD,STD,SHLD,35M Siemens
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6FX5002-2AH00-1EA0 PREFAB,CABLE,ROD,STD,SHLD,40M Siemens
6FX5002-2AH00-1EB0 SIGNAL CABLE,PREFAB,MC500,41M Siemens
6FX5002-2AH00-1EF0 PREFAB,CABLE,ROD,STD,SHLD,45M Siemens
6FX5002-2AH00-1EK0 PREFAB,SIGCB,ROD,STD,SHLD,49M Siemens
6FX5002-2AH00-1FA0 PREFAB,CABLE,ROD,STD,SHLD,50M Siemens
6FX5002-2AH00-1FF0 PREFAB,SIGCB,ROD,STD,SHLD,55M Siemens
6FX5002-2AH00-1FJ0 SIGNAL CABLE,PREFAB,MC500,58M Siemens
6FX5002-2AH00-1GA0 SIGNAL CABLE,PREFAB,MC500,60M Siemens
6FX5002-2AH00-1HA0 PREFAB,CABLE,ROD 431 ,MC 500,70M Siemens
6FX5002-2AH00-1HF0 PREFAB,SIGCB,ROD,STD,SHLD,75M Siemens
6FX5002-2AH00-1HG0 PREFAB,SIGCB,ROD,STD,SHLD,76M Siemens
6FX5002-2AH00-1HJ0 PREFAB,SIGCB,ROD,STD,SHLD,78M Siemens
6FX5002-2AH00-1JA1 PREFAB,SIGCB,ROD,STD,SHLD,80M Siemens
6FX5002-2AH00-1KA0 PREFAB,CABLE,SIGNAL,ROD 431,90M Siemens
6FX5002-2AH00-1KC0 PREFAB,SIGCB,ROD,STD,SHLD,76M Siemens
6FX5002-2AH00-1KF0 PREFAB,CABLE,SIGNAL,ROD 431,90M Siemens
6FX5002-2AH00-2AA0 SIGNAL CABLE,PREFAB,MC500,100M Siemens
6FX5002-2AH00-2AJ0 PREFAB,SIGCB,ROD,STD,SHLD,108M Siemens
6FX5002-2AH00-2BA0 SIGNAL CABLE,PREFAB,MC500,110M Siemens
6FX5002-2AH00-2CA0 CABLE,SIGNAL,PREFAB,MC500,DMAX9.3MM,120M Siemens
6FX5002-2AH00-2CC0 PREFAB,SIGCB,ROD,STD,SHLD,122M Siemens
6FX5002-2AH00-2FA0 CABLE,SIGNAL,PREFAB,MC500,150M Siemens
6FX5002-2AH00-2JD0 PREFAB,SIGCB,ROD,STD,SHLD,183M Siemens
6FX5002-2AH04-1AF0 SIGNAL CABLE,PREFAB,5M Siemens
6FX5002-2AH04-1AJ0 SIGNAL CABLE,PREFAB,8M Siemens
6FX5002-2AH04-1BD0 SIGNAL CABLE,PREFAB,13M Siemens
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