Modbus是modicom公司提出得一种数据传送方式, 也是现在用的较多的现场总线之一,之所以它这么成功得被应用, 主要原因是因为Modbus协议的简单,和开放性较好-Modbus is modicom companies have a data transmission method is now used more fieldbus one reason why it was such a successful application, the main reason is because