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这种开发方式的优点是显而易见的，厂商的开发成本低，灵活度高，但是需要数控厂商提供相当多的技术支持，如果客户数量多则厂家很难有足够的支持能力，所以这类厂商大多都希望能开发方案二的数控平台。
楼宇控制可以说是一个很好玩的行业，价格奇高，但功能却不并复杂，所以现在有很多工程商在使用小点数的PLC组网代替DDC，但在易开发方面相对要差一些（主要是软件），主要是楼宇本身是*行业，大家对一个点近千元的价格并不感到无法承受，只有当楼市价格下降竞争大了才会有可能重视成本方面。
个人认为未来楼控很难作为一个单独的控制器种类存在，而会被其它产品给吞并，例于PLC。
数采行业因为受到了GPRS、GSM等业务的影响，正出现一次比较大的变革，特别是在远距离方面，传统的MODEM、RTU方式正受到很大的冲击，在我们经手的很多环境监控、管道监控、路灯节能、水文监控方面很少有客户能经受GPRS DTU的诱惑。DTU的基于网络和透明通信方式深受大家的喜爱，只是目前DTU的价格相对而言还是比较高，如果能掉到GSM MODEM的价格就比较合适了。除此之外移动对于数据业务的支持还是不够，早期还可以用神州行卡，现在已全部关闭了，只能用**通，而**通每月50元的月租实在让人很恼火，一个城市的路灯节能控制器如果全部上GPRS，假设有1000个点，那么每个月就需要5万元的开支，还不包括流量的收费，对于公共事业这还算好，对于工厂或者电梯的监控就很难受了。
无论如何GPRS DTU是一个方向，单节点月费用不**过二十元，单节点价格低于400元时将是其大行其市的日子。
2、未来的控制系统
前面讲了这么多历史，下面看看我心目中的未来控制器。
经过FCS和现场总线的浪潮后，各大公司好像都累了，这几年大家都在底头为下一代的控制器做各种研发和准备（包括理论和实践），在这个过程中，我们与、AB、思博等公司进行了比较深入的合作和交流同时也有了一些自己的想法：
我认为将来的控制器将会分为以下三类：
CACR-SR30SB1BSY19 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR30SZ1SD Yaskawa Yasnac AC Servo Drive ServoPack
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Yaskawa / Magnetek CIMR-G5M4022 40HP 460V AC Drive
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CACR-HR30BB Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-HR30BBY22 Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-HR30UBY9 Yaskawa Yasnac AC Servo Drive ServoPack
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Yaskawa / Magnetek CIMR-G5M4015 25HP 460V AC Drive
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CACR-SR20BB1AM Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR20BB1AF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR20BB1BF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR20SB1AFY118 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR20SB1BFY118 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR20BZ1SFY259 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR20SB1BF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR20SB1BFY100 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR20BE12G-E Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR20BY1SFY17 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR20SZ1SFY91 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR20SB1AFY100 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR20BB1BF-H Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR20TZ6SM-E Yaskawa Yasnac AC Servo Drive ServoPac
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SGDB-44ADS Yaskawa AC ServoPack SIGMA I Servo Drive
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CACR-HR20BB Yaskawa Yasnac AC Servo Drive ServoPack
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YASKAWA CIMR-F7U2011 DRIVE 240V 45A ***NIB***
Yaskawa / Magnetek AC Drive CIMR-G3U2011 15HP 230V, NEW
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SGDB-30ADGY8 Yaskawa AC ServoPack SIGMA I Servo Drive
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CACR-SR15BE12G-E Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR15BB1AF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR15SZ1SDY77 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR15SB1AF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR15SZ1SDY214 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR15BB1BFY288 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR15BB1AMY114 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR15BB1ESY114 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR12TZ6SM-E Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR15BB1BF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR15SB1AFY100 Yaskawa Yasnac AC Servo Drive ServoP
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