modbus通讯协议的软件实现，在Linux操作系统下，通过ARM控制器与从设备9133通信。-modbus communication protocol software implementation, the Linux operating system, through the ARM controller and communications from the device 9133.

使用delphi7编写的645规约的电表485通讯程序，非常实用，可直接修改就可用于电表上位机软件通讯。- Use delphi7 written statute 645 meter 485 procedures, very practical, you can directly modify the PC software can be used for meter communications.