1746-OB16E

1746-OB16E

1746-OB16E

1746-OB16E

、RS-485多机通信节点数的极限
       假设RS-485通信的地址编码为8位，那么最多的节点数就是2^8=256;假设RS-485通信的地址编码为10位，那么最多的节点数就是2^10=1024。10位已经多到极少用到。这个总线中的RS-485节点数的极限完全取决于通信软件 ，与总线中所接的RS-485中继转换器个数没有关系。实际上，因为受RS-485接口芯片性能的限制，每一段RS-485目前最多接128个节点，所以要达到256个的极限就得至少接一个485A2中继转换器，要达到1024极限就要至少8个485A2中继转换器。

A：哪里有卖AB、施耐德、FOXBORO 的产品？？
 
泰尼电气-小黄：厦门泰尼电气有
 
A: 你那边联系方式是多少？
 
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