1756-ow16i 1756-if16 1756-dnb
1757-srm 1769-sdn 1756-cfm
ic697bem731 ic697bem731
冯晋中先生：plc 的开放是必然的，封闭的plc会给用户带来很大不便。比如某家工厂需要扩展或者在使用期间又引进了一些其他厂家的设备，由于每个厂商的plc都采用不同的通信方式，彼此之间不能互通，就会造成新系统与原系统无法兼容。西门子早在几年前就已经注意到了这个问题，并着力推广全集成自动化（tia）理念，借助 profibus现场总线技术来促进plc具有更高的通信性能。
猪八戒：那价格怎么样，可以留点钱买吃的吗？
孙悟空：八戒你就知道吃，不过他们的《价格绝对是全国最低》的！
沙悟净：那要我去挑吗？
孙悟空：不用，一般他们是《包邮》的！
唐僧：那还等什么，快去买，买完完成任务我就升官了。
孙悟空：别急，这家拥有《充足的库存》，我们可以先拨打《手机18030028083》《电话0592-6809819》联系预定下或者加《qq：2314094943》留下言就ok了，如果询价数量多还可以发《传真0592-6890859》备注：张工收就可以了。a2
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